This compilation Copyright (C) 2005 Mike Sebastian. No copyright claim is made to original U.S. Government works.
| U.S. Patent No. | Assignee | File Date | Issue Date | Inventor1 | Product | Title | Comments |
| 3654449 | Diversified Electronics Co., Inc. | November 5, 1970 | April 4, 1972 | Boyce | - | Calculator input means to bypass conventional keyboard input | Calculator used as counter/data acquisition device |
| 3777126 | Dietzgen Electronics, Inc. | April 14, 1969 | December 4, 1973 | Hoff | - | Measurement transducer calculator interface | Calculator used as counter/data acquisition device |
| 3813533 | Garrett Comptronics Corp | June 2, 1972 | May 28, 1974 | Cone | - | Clock calculator | - |
| 3816731 | Rodney L. Jennings | February 20, 1973 | June 11, 1974 | Jennings | - | Conversion apparatus utilized with an electronic calculator | Length/angle converter which monitors keystrokes and generates keystroke signals (like the MM5765 programmer chip) to enter converted data into the calculator |
| 3867619 | Tobishi Pharmaceutical Co., Ltd. | June 24, 1972 | February 18, 1975 | Arauchi | - | Desk top electronic computer with digital clock | - |
| 3924111 | (none) | September 25, 1974 | December 2, 1975 | Farris | - | Electronic calculator for navigational purposes | - |
| 3932709 | General Teletronics Inc. | April 16, 1973 | 13, 1976 | Hoff | - | Electronic business telephone | Telephone/calculator |
| 3955073 | (none) | May 14, 1974 | May 4, 1976 | Carew | - | Caliper type dimensional sensing devices and associated electronic measuration, data processing and printout system | Measuring calipers feed measurements to a calculator |
| 3968583 | (none) | March 24, 1975 | July 13, 1976 | Allam | - | Numeric display for arabic speaking people | Twelve-segment display for displaying numbers as written in the arabic language |
| 3973113 | (none) | September 19, 1974 | August 3, 1976 | Goldsamt | - | Electronic calculator for feet-inch-fraction numerics | - |
| 3979057 | Specialized Electronics Corp. | October 29, 1974 | September 7, 1976 | Katz | - | Electronic navigational computer | - |
| 3979058 | Specialized Electronics Corp. | October 29, 1974 | September 7, 1976 | Katz | - | Operator prompting system for stored program calculator | Preprogrammed calculator prompts user for inputs |
| 3995123 | (none) | January 9, 1974 | November 30, 1976 | Wilson | - | Telephone calculator | - |
| 4024347 | Lake Center Industries | August 11, 1975 | May 17, 1977 | Carter | - | Telephone calculator | Uses National Semiconductor MM5738 calculator chip |
| 4031376 | (none) | June 30, 1975 | June 21, 1977 | Corkin | - | Calculating method and apparatus for handicapping thoroughbred races and the like | - |
| 4041291 | (none) | December 19, 1975 | August 9, 1977 | Pavda | - | Dollars and cents telephone metering computer | Calculator chip used to compute cost of long distance telephone call |
| 4048484 | (none) | April 26, 1976 | September 13, 1977 | Brittan | - | Digital grade averager | Teacher grading calculator |
| 4060719 | (none) | July 23, 1976 | November 29, 1977 | Dalinowski | - | Computer for solving unknown parameters of geometric figures | Preprogrammed calculator for problems involving triangles |
| 4063046 | Jerome D. Schiffman & Milton Shlaes | September 24, 1974 | December 13, 1977 | Schiffman | - | Telephone mounted calculator | Calculator sits on top of keypad for regular desktop telephone, uses MM5737 |
| 4071891 | (none) | April 30, 1976 | January 31, 1978 | Barrows | - | Electronic calculator - register for hematology differentials | Calculator for doing cell counts |
| 4081859 | (none) | September 19, 1974 | March 28, 1978 | Goldsamt | - | Electronic calculator for feet-inch-fraction numerics | - |
| 4088837 | (none) | April 5, 1976 | May 9, 1978 | Singer | - | Combination telephone and calculator with common keyboard having reversible indicia | - |
| 4092523 | (none) | August 16, 1976 | May 30, 1978 | Tava | - | Conversion calculator | Currency converter |
| 4095274 | (none) | April 27, 1977 | June 13, 1978 | Gordon | - | Apparatus for determining food content | Kitchen calculator/timer incorporating flip cards containing nutritional information |
| 4100602 | MIT | November 10, 1976 | July 11, 1978 | Shapiro | - | Recipe conversion calculator | Metric/kitchen conversion calculator |
| 4100603 | Joseph Lyndon Boyd | December 16, 1976 | July 11, 1978 | Boyd | - | Feet, inches and sixteenths adder | Add and subtract feet, inches, and 16ths of an inch; no multiplication or division |
| 4117542 | (none) | July 7, 1977 | September 26, 1978 | Klausner | - | Electronic pocket directory | - |
| 4118783 | (none) | February 7, 1977 | October 3, 1978 | Collins | - | Digital grade averager | Teacher grading calculator |
| 4119810 | Phone Devices Corp. | September 13, 1976 | October 10, 1978 | Marin | - | Pushbutton telephone apparatus with automatic dialing and combinational sequential control signalling capabilities | Telephone/calculator; uses MM5737 |
| 4120037 | Olympus Optical Company Ltd. | March 23, 1976 | October 10, 1978 | Sato | - | Desk-top electronic calculator and tape recorder assembly | - |
| 4122526 | Pitney-Bowes, Inc. | December 20, 1976 | October 24, 1978 | Dlugos | - | Calculating and postal zip code-to-postal zone converting apparatus | Calculator and postal zone calculation |
| 4151596 | Science Accessories Corp. | September 26, 1977 | April 24, 1979 | Howells | - | Calculator interface | Digitizing tablet for calculator |
| 4156912 | Systek Corp. | July 31, 1974 | May 29, 1979 | Shigeta | - | Electronic navigation calculator | - |
| 4164038 | (none) | July 5, 1977 | August 7, 1979 | Nachtigal | - | Combination calculator and time billing device | - |
| 4192006 | (none) | August 7, 1978 | March 4, 1980 | Hausdorff | - | Portable travel expense tabulator | - |
| 4212079 | GPD Inc. | May 18, 1978 | July 8, 1980 | Segar | - | Electronic calorie calculator | Calculates calories consumed and calories burned |
| 4222109 | (none) | June 5, 1978 | September 9, 1980 | Siwula | - | Electronic checkbook | Checkbook calculator |
| 4224675 | (none) | December 11, 1978 | September 23, 1980 | Pinkerman | - | Portable checkbook-balance calculating device | - |
| 4228516 | (none) | December 26, 1978 | October 14, 1980 | Johnston | - | Computer for metric conversion | Metric conversion calculator |
| 4232367 | (none) | June 12, 1978 | November 4, 1980 | Youden | - | Apparatus for maximizing interest earnings and providing payments from principal without interest penalty | Financial calculator for optimizing earnings between different types of interest bearing accounts; looks like applicant borrowed HP-80 patent images |
| 4244020 | (none) | January 15, 1979 | January 6, 1981 | Ratcliff | - | Caloric and/or carbohydrate calculator | - |
| 4245323 | Copol Co., Ltd. | June 30, 1977 | January 13, 1981 | Yamazaki | - | Electronic calculator with time display function | - |
| 4246703 | (none) | June 28, 1979 | January 27, 1981 | Robinet | - | Electronic drafting instrument with digital readout of displacement | - |
| 4270173 | (none) | October 5, 1979 | May 26, 1981 | Suttler | - | Electronic scaler | Graphics arts scaling calculator; dimensions can be entered via adjustable copy-layout frame |
| 4275443 | (none) | May 7, 1979 | June 23, 1981 | Sorin | - | Board game computing device | Backgammon calculator |
| 4279022 | Tokyo Shibaura Electric Co., Ltd. | May 14, 1977 | July 14, 1981 | Abe | - | Electronic calculator/memorandum apparatus | - |
| 4282514 | (none) | December 17, 1976 | August 4, 1981 | Elkin | - | Electronic converter | Dual display metric converter |
| 4282571 | (none) | January 22, 1979 | August 4, 1981 | Giovannoli | - | Electronic distance measurement and displaying apparatus | Drafting instrument |
| 4282580 | (none) | September 10, 1979 | August 4, 1981 | McGuire | - | Pocket calculator with grade averaging function | Teacher grading calculator |
| 4290113 | Labora Mannheim GmbH fur Labortechnik | December 13, 1977 | September 15, 1981 | Haker | - | Minicomputer | Unit conversion calculator |
| 4308588 | (none) | June 5, 1978 | December 29, 1981 | Siwula | - | Electronic checkbook | Checkbook calculator |
| 4319130 | VEB Applikationszentrum Elektronik Berlin | May 18, 1976 | March 9, 1982 | Spitzner | - | Device for the automated digital transcription and processing of quantities and units | Unit conversion calculator |
| 4334278 | (none) | May 6, 1980 | June 8, 1982 | Marmon | - | Shoppers coupon calculator | Calculator optimized for use by a shopper; helps shopper determine best value based on price, size/quantity, and coupon value |
| 4362393 | (none) | November 17, 1980 | December 7, 1982 | Tissot | - | Chess clock | Calculator receives 1 second pulses to count time |
| 4367526 | (none) | September 8, 1980 | January 4, 1983 | McGeary | - | Golf calculator | - |
| 4377850 | (none) | June 23, 1977 | March 22, 1983 | Simpson | - | Hand-held measuring and calculating device | Measuring wheel with calculator |
| 4380802 | GPD Inc. | May 18, 1978 | April 19, 1983 | Segar | - | Electronic calorie calculator | Calculates calories consumed and calories burned |
| 4383301 | (none) | May 5, 1977 | May 10, 1983 | Morita | - | Measurement and calculating instrument | Calculator with wheel for measuring distances on map or drawing |
| 4398086 | Smith Engineering | January 6, 1982 | August 9, 1983 | Smith | General Consumer Elecronics, Inc. Chase-n-Counter, Space-n-Counter | Game-calculator having sliding mask | - |
| 4405991 | (none) | April 7, 1981 | September 20, 1983 | Stanley | - | Kitchen calculator | - |
| 4446528 | (none) | June 8, 1980 | May 1, 1984 | Marmon | - | Shoppers calculator | Calculator optimized for use by a shopper; helps shopper determine best value based on price, size/quantity, and coupon value |
| 4458320 | (none) | July 6, 1981 | July 3, 1984 | Sutton | - | Electronic calculating device | Calculator optimized for use by a shopper; price data automatically added to total after a period of inactivty, negating the need for pressing an addition/entry key |
| 4463438 | Industrial Mainenance Systems, Inc. | December 11, 1981 | July 31, 1984 | Zatezalo | - | Shaft alignment calculator | Specialized calculator to facilitate shaft alignment |
| 4488250 | (none) | July 2, 1982 | December 11, 1984 | Lipsey | Sonin InchMate+ | Hand-held calculator for performing calculations in feet, inches and fractions | - |
| 4545022 | (none) | February 10, 1983 | October 1, 1985 | Hughins | - | Fractional calculator | - |
| 4689753 | (none) | June 12, 1985 | August 25, 1987 | Cameron | - | Calculator for chemical stoichiometry | - |
| 4709331 | (none) | May 1, 1984 | November 24, 1987 | Barkett | - | Calculator-computer for calculating infusion rates over varying time intervals | Calculator optimized for medical personnel |
| 4715011 | (none) | December 4, 1984 | December 22, 1987 | Brittan | Calculated Industries GradeMatic 1000 | Grade averaging calculator | Teacher grading calculator |
| 4737911 | Nelson H. Shapiro | June 7, 1985 | April 12, 1988 | Freeman | - | Process for electronically maintaining financial records, especially for checkbook balancing and rectification | Checkbook calculator with magnetic card reader to input account balance data from bank |
| 4744044 | Electronic Teacher's Aids, Inc. | June 20, 1986 | May 10, 1988 | Stover | - | Hand-held calculator for dimensional calculations | Yard, feet, inch, fraction of inch, metric dimensions calculator |
| 4796214 | Photo Audio Consumer Electronics Marketing Corp. | January 9, 1986 | January 3, 1989 | Fisherman | - | Integral calculator and address book | Thin LCD calculator forms front cover of address booklet; sheet magnet back cover attracted to back of calculator to keep booklet closed |
| 4800514 | (none) | May 28, 1987 | January 24, 1989 | Earle | - | Electronic graphic arts proportional calculator | Calculates percentage reductions or enlargements for reproduction |
| 4807170 | (none) | March 25, 1986 | February 21, 1989 | Kulli | - | Drug dose rate calculator | - |
| 4820908 | Limax Electronics Co., Ltd. | June 21, 1988 | April 11, 1989 | Wei | - | Combined calculator and puzzle game device | Sliding puzzle pieces can be pushed as calculator keys |
| 4831538 | Aviation Supplies and Academics | December 8, 1986 | May 16, 1989 | Cucchiari | ASA CX-1 Pathfinder Flight Computer | Hand-held navigation and flight performance computer | - |
| 4868772 | (none) | April 18, 1988 | September 19, 1989 | Collard | - | Earned run and batting average calculator | Uses National Semiconductor MM5736 calculator chip |
| 4872112 | (none) | July 25, 1988 | October 3, 1989 | Hungerford | - | Recipe calculator | Calculator for increasing or decreasing recipe |
| 4910696 | (none) | January 27, 1988 | March 20, 1990 | Grossman | - | Computerized personal portable account register | Checkbook calculator |
| 5018084 | (none) | January 30, 1989 | May 21, 1991 | Frank | - | Darkroom calculator | Performs various darkroom photography calculations; had temperature probe and light sensor inputs |
| 5050115 | (none) | December 15, 1986 | September 17, 1991 | Matsuda | - | Electronic calculator | Yard, feet, inch, and fraction of inch – display of fractions |
| 5050312 | RJP Intl. Ltd. | May 16, 1988 | September 24, 1991 | McCannon | - | Graphic calculator | Linear display for displaying ruler rulings |
| 5101368 | (none) | June 20, 1988 | March 31, 1992 | Kaplan | - | Conversion calculator | Metric/kitchen conversion calculator |
| 5134692 | Hiromori Inc. | May 23, 1989 | July 28, 1992 | Hiromori | - | Combined electronic calculator and abacus with deflective guide bars | - |
| 5138566 | (none) | October 1, 1990 | August 11, 1992 | Comforti | - | Fractiona/decimal/digital converting calculator | Feet, inch, fraction of inch calculator |
| 5150315 | (none) | September 1, 1988 | September 22, 1992 | Katzin | - | Electrical resistor value decoding calculator | - |
| 5233547 | NCR Corp. | November 12, 1991 | August 3, 1993 | Kapp | - | Electronic checking account apparatus and method having a digitizer to receive information as a check is being written | Checkbook calculator/register with character recognition |
| 5233552 | (none) | November 26, 1991 | August 3, 1993 | Brittan | Calculated Industries GradeMatic 1000 | Grade averaging calculator | Teacher grading calculator |
| 5258935 | (none) | March 30, 1990 | November 2, 1993 | Ure | - | Self-inputing checkbook accounting device | Checkbook calculator with handwriting recognition |
| 5272653 | (none) | October 13, 1992 | December 21, 1993 | Meta | - | Multilane keyboard for inch calculations | Special keyboard for feet, inch, fraction of inch calculator |
| 5299295 | Balenz, Inc. | March 12, 1991 | March 29, 1994 | Kim | - | Method and apparatus for electronically viewing, printing and registering checks | Checkbook calculator with printer |
| 5303291 | Fujitsu Ltd. | September 7, 1990 | April 12, 1994 | Takagi | - | Portable telephone having a detachable functional module | Flip-phone with calculator built into keypad cover |
| 5335273 | Fujitsu Ltd. | September 7, 1990 | August 2, 1994 | Takagi | - | Portable telephone and multifunction protective housing therefor | Flip-phone with calculator built into keypad cover |
| 5485410 | (none) | April 25, 1994 | January 16, 1996 | Mastromattei | - | Measurement calculator | Calculator capable of performing English unit calculations affixed to a tape measure |
| 5630664 | (none) | December 20, 1995 | May 20, 1997 | Farrelly | - | Hand held apparatus for performing medical calculations | - |
| 5729479 | Diet-Deal Ltd. | September 14, 1995 | March 17, 1998 | Golan | - | Multifunction diet calculator | - |
| 5828587 | (none) | May 6, 1997 | October 27, 1998 | Bedol | - | Attachment apparatus for checkbook cover and method of use thereof | Thin calculator and checkbook cover |
| 5886331 | (none) | November 18, 1996 | March 23, 1999 | Lyons | - | Electronic calculator for determining truck driver log book values | - |
| 6167412 | Agilent Technologies, Inc. | July 14, 1998 | December 26, 2000 | Simons | - | Handheld medical calculator and medical reference device | Appears to be based on HP-48G platform |
| 6295533 | Western Wood Products Association | November 14, 1997 | September 25, 2001 | Cheung | - | Calculator for determining sizes and spans of wooden structural supports | - |
| 6324557 | CCL Products Enterprises, Inc. | March 30, 1999 | November 27, 2001 | Chan | - | Combination exerciser gripper and calculator | Calculator with spring hand grips for exercising; calculator counts number of compressions |
| 6687720 | David L. Simmons | September 5, 2000 | February 3, 2004 | Colver | - | Percentage and average calculator with expanded display | Grade calculator for teachers |
| 6712614 | (none) | February 7, 2001 | March 30, 2004 | Henderson | - | Abacus calculator | - |
| 6910055 | Shin-Jiuh Corp. | August 30, 2001 | June 21, 2005 | Chou | - | Calculator device for enabling a keypad to function as both a keypad and a calculator | Auxiliary numeric keypad is also a calculator |
| 6944638 | (none) | November 14, 2001 | September 13, 2005 | Putman | - | Medication dosage calculator | - |
| 6960988 | Long Range Systems, Inc. | June 14, 2001 | November 1, 2005 | Blink | - | Multi-function customer satisfaction survey device | Calculator, built into tip tray, presents survey questions to restaurant customers |
| 6978286 | Francis Mathis, Inc. | August 27, 2002 | December 20, 2005 | Frabcus | - | Handheld medication dosage calculator | - |
| 7096239 | (none) | December 23, 2003 | August 22, 2006 | Bihun | - | Trigonometry calculator | Performs calculations for unknown parameters of plane triangles |
| 7099905 | (none) | May 10, 2003 | August 29, 2006 | Straus | - | Novelty calculator system for amusement | Calculator displays wrong answers to surprise unsuspecting users |
| 7124933 | (none) | June 29, 2004 | October 24, 2006 | Deanna | - | Agricultural converter calculator | Bushel-weight conversions for selected crops |
Last updated November 5, 2006
