Inventor · disambiguated record
Hajime Ishikawa
Also filed as: ISHIKAWA HAJIME
23 granted patents·7 pending applications·405 citations·filing 1979–2020
96Inventor score
Top patents by PatentIndex Score
30 records- 0189US4298629AMethod for forming a nitride insulating film on a silicon semiconductor substrate surface by direct nitridationFUJITSU LTD·Filed 1980·Granted Nov 3, 1981·76 cites·30 claims
- 0288US8375334B2Portable information terminal, display control device, display control method, and computer readable program thereforKYOCERA CORP·Filed 2003·Granted Feb 12, 2013·75 cites·35 claims
- 0378US5101249ANonvolatile semiconductor memory deviceFUJITSU LTD·Filed 1986·Granted Mar 31, 1992·36 cites·13 claims
- 0471US7372804B2Multiplex communication system and methodNEC CORP·Filed 2003·Granted May 13, 2008·19 cites·26 claims
- 0570US4343657AProcess for producing a semiconductor deviceFUJITSU LTD·Filed 1980·Granted Aug 10, 1982·32 cites·27 claims
- 0668US6477184B1Time-division multiplexing transmission systemNEC CORP·Filed 1998·Granted Nov 5, 2002·33 cites·16 claims
- 0765US8717941B2Communication method, mobile agent device, and home agent deviceHATA HIROAKI·Filed 2006·Granted May 6, 2014·5 cites·10 claims
- 0865US5610911AMethod and device for channel selectionNEC CORP·Filed 1994·Granted Mar 11, 1997·29 cites·17 claims
- 0964US11461884B2Field management apparatus, field management method, and computer readable recording mediumNEC CORP·Filed 2018·Granted Oct 4, 2022·1 cites·15 claims
- 1059US8641836B2Steel plate for line pipe excellent in strength and ductility and method of production of sameISHIKAWA HAJIME·Filed 2009·Granted Feb 4, 2014·1 cites·4 claims
- 1157US5589205AApparatus for manufacturing hollow resin productsTIGERS POLYMER·Filed 1994·Granted Dec 31, 1996·17 cites·9 claims
- 1257US4270136AMIS Device having a metal and insulating layer containing at least one cation-trapping elementFUJITSU LTD·Filed 1979·Granted May 26, 1981·8 cites·6 claims
- 1354US8874280B2Information processing system, method for checking vehicle, and program for checking vehicleDOI SHINICHI·Filed 2011·Granted Oct 28, 2014·3 cites·6 claims
- 1454US6219357B1Channel multiplex demultiplex method and channel multiplex demultiplex unitNEC CORP·Filed 1996·Granted Apr 17, 2001·18 cites·17 claims
- 1554US5785920AExtrusion molding apparatus and method of forming a parisonTIGERS POLYMER·Filed 1996·Granted Jul 28, 1998·16 cites·5 claims
- 1648US2014191426A1Carbonated spring producing couplerLOTUS PROMOTION LTD·Filed 2013·Application pending·0 cites
- 1747US11348272B2Vegetation index calculation apparatus, vegetation index calculation method, and computer readable recording mediumNEC CORP·Filed 2018·Granted May 31, 2022·0 cites·6 claims
- 1846US2023059609A1Assistance information generation device, assistance information generation method, and program recording mediumNEC CORP·Filed 2020·Application pending·0 cites
- 1944US5723089ALine pipe metal arc welded with wire alloyNIPPON STEEL CORP·Filed 1997·Granted Mar 3, 1998·11 cites·3 claims
- 2044US5601779AMethod for manufacturing hollow resin productsTIGERS POLYMER·Filed 1995·Granted Feb 11, 1997·9 cites·7 claims
- 2143US2001010695A1Method of carrying out multiplex transmission of subscriber service signalsNEC CORP·Filed 2001·Application pending·0 cites
- 2242US4349395AMethod for producing MOS semiconductor deviceFUJITSU LTD·Filed 1980·Granted Sep 14, 1982·6 cites·9 claims
- 2342US2004222975A1Personal digital assistant and program used thereforKYOCERA CORP·Filed 2004·Application pending·0 cites
- 2441US2004164973A1Personal digital assistant and program for controlling used for the sameKYOCERA CORP·Filed 2003·Application pending·0 cites
- 2541US2005003870A1Information terminal and program for processing displaying information used for the sameKYOCERA CORP·Filed 2003·Application pending·0 cites
- 2638US11417089B2Vegetation index calculation apparatus, vegetation index calculation method, and computer readable recording mediumNEC CORP·Filed 2018·Granted Aug 16, 2022·0 cites·9 claims
- 2738US5757800ATime division multiplexing transmitter and decoding circuit used for said transmitter and method for time division multiplexing transmissionNEC CORP·Filed 1995·Granted May 26, 1998·6 cites·19 claims
- 2837US2019265735A1Flight control device, unmanned aerial vehicle, flight control method, and computer-readable recording mediumNEC CORP·Filed 2017·Application pending·0 cites
- 2934US5817275ASteel plate having excellent corrosion resistance and sulfide stress cracking resistanceNIPPON STEEL CORP·Filed 1995·Granted Oct 6, 1998·3 cites·2 claims
- 3029US5892469ATime division multiplexing transmitter and decoding circuit used for said transmitter and method for time division multiplexing transmissionNEC CORP·Filed 1997·Granted Apr 6, 1999·1 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Hajime Ishikawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →