Inventor · disambiguated record
Koichi Hatta
Also filed as: HATTA KOICHI
22 granted patents·1 pending application·475 citations·filing 1980–2006
96Inventor score
Top patents by PatentIndex Score
23 records- 0183US5515520AData processing system for single-precision and double-precision dataFUJITSU LTD·Filed 1994·Granted May 7, 1996·107 cites·6 claims
- 0281US4528638AShopping calculator with comparison featureSHARP KK·Filed 1982·Granted Jul 9, 1985·42 cites·8 claims
- 0380US4340375AElectronic learning aidSHARP KK·Filed 1980·Granted Jul 20, 1982·44 cites·14 claims
- 0474US5115508APassword system utilizing two password types, the first being changeable after entry, the second being unchangeable until power is removedSHARP KK·Filed 1988·Granted May 19, 1992·54 cites·7 claims
- 0569US5859551ADigital PLL circuitFUJITSU LTD·Filed 1997·Granted Jan 12, 1999·29 cites·4 claims
- 0657US5508948ANumeric representation converting apparatus and vector processor unit such apparatusFUJITSU LTD·Filed 1994·Granted Apr 16, 1996·32 cites·6 claims
- 0757US4618927AElectronic game apparatusSHARP KK·Filed 1983·Granted Oct 21, 1986·14 cites·9 claims
- 0854US6798831B1Testing systemFUJITSU LTD·Filed 2000·Granted Sep 28, 2004·3 cites·22 claims
- 0950US5822557APipelined data processing device having improved hardware control over an arithmetic operations unitFUJITSU LTD·Filed 1996·Granted Oct 13, 1998·26 cites·20 claims
- 1049US6618450B1Receiving apparatus and receiving methodFUJITSU LTD·Filed 1999·Granted Sep 9, 2003·25 cites·15 claims
- 1149US4695983ACalculator or pocket computer with selectable operational sequenceSHARP KK·Filed 1984·Granted Sep 22, 1987·17 cites·2 claims
- 1246US7085397B2Unfair contents appropriation detection system, computer program and storage mediumOKI ELECTRIC IND CO LTD·Filed 2002·Granted Aug 1, 2006·2 cites·7 claims
- 1346US4589779AMulti-alarm timepiece with simplified operating meansSHARP KK·Filed 1983·Granted May 20, 1986·8 cites·2 claims
- 1444US5742842AData processing apparatus for executing a vector operation under control of a master processorFUJITSU LTD·Filed 1996·Granted Apr 21, 1998·19 cites·11 claims
- 1544US4796215AProgrammable calculator with external memory module and protection against erroneous erasure of data in the moduleSHARP KK·Filed 1985·Granted Jan 3, 1989·14 cites·3 claims
- 1641US5778010AMethod and device for correcting packet data error and packet receiverFUJITSU LTD·Filed 1996·Granted Jul 7, 1998·9 cites·6 claims
- 1740US4609918AGraph-drawing machineSHARP KK·Filed 1983·Granted Sep 2, 1986·10 cites·8 claims
- 1838US2009021350A1Portable electronic device, security system and method for determining allowable operating range of portable electronic deviceOKI ELECTRIC IND CO LTD·Filed 2006·Application pending·0 cites
- 1937US4569029ACheck calculatorSHARP KK·Filed 1982·Granted Feb 4, 1986·6 cites·5 claims
- 2035US6087869ADigital PLL circuitFUJITSU LTD·Filed 1998·Granted Jul 11, 2000·5 cites·10 claims
- 2132US5742839ACoprocessor for performing an arithmetic operation by automatically reading data from an external memoryFUJITSU LTD·Filed 1993·Granted Apr 21, 1998·6 cites·14 claims
- 2229US4780825AText compiling deviceSHARP KK·Filed 1985·Granted Oct 25, 1988·1 cites·6 claims
- 2327US4864530ADisplay system for a compact electronic apparatusSHARP KK·Filed 1988·Granted Sep 5, 1989·2 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →