Inventor · disambiguated record
Dai Watanabe
Also filed as: WATANABE DAI
21 granted patents·4 pending applications·450 citations·filing 1991–2020
96Inventor score
Top patents by PatentIndex Score
25 records- 0190US7372962B2Storage system executing encryption and decryption processingHITACHI LTD·Filed 2004·Granted May 13, 2008·59 cites·24 claims
- 0289US7110545B2Method and apparatus for symmetric-key encryptionHITACHI LTD·Filed 2001·Granted Sep 19, 2006·62 cites·22 claims
- 0387US6732023B2Train control method and apparatusHITACHI LTD·Filed 2002·Granted May 4, 2004·82 cites·12 claims
- 0483US5359701AExpert system development support system and expert system environment utilizing a frame processing tecniqueHITACHI LTD·Filed 1993·Granted Oct 25, 1994·52 cites·12 claims
- 0577US8526615B2Storage system executing encryption and decryption processingFUJIMOTO KAZUHISA·Filed 2011·Granted Sep 3, 2013·4 cites·6 claims
- 0677US8108682B2Hash value generatorWATANABE DAI·Filed 2009·Granted Jan 31, 2012·10 cites·8 claims
- 0776US7903816B2Storage system executing encryption and decryption processingHITACHI LTD·Filed 2008·Granted Mar 8, 2011·5 cites·8 claims
- 0875US7756613B2Signaling systemHITACHI LTD·Filed 2006·Granted Jul 13, 2010·14 cites·13 claims
- 0971US7201350B2Signaling safety systemHITACHI LTD·Filed 2004·Granted Apr 10, 2007·37 cites·6 claims
- 1070US7269487B2Method for train positioningHITACHI LTD·Filed 2004·Granted Sep 11, 2007·33 cites·7 claims
- 1168US7165748B2Train position detection systemHITACHI LTD·Filed 2005·Granted Jan 23, 2007·12 cites·4 claims
- 1265US8122075B2Pseudorandom number generator and encryption device using the sameWATANABE DAI·Filed 2007·Granted Feb 21, 2012·4 cites·12 claims
- 1365US7359515B2Method and apparatus for symmetric-key decryptionHITACHI LTD·Filed 2006·Granted Apr 15, 2008·2 cites·10 claims
- 1464US7224796B2Pseudorandom number generating apparatus or encryption or decryption apparatus using the sameHITACHI LTD·Filed 2002·Granted May 29, 2007·10 cites·2 claims
- 1561US8548654B2Signaling systemKATSUTA KEIICHI·Filed 2006·Granted Oct 1, 2013·7 cites·10 claims
- 1660US7200232B2Method and apparatus for symmetric-key decryptionHITACHI LTD·Filed 2001·Granted Apr 3, 2007·5 cites·13 claims
- 1759US7099754B2Signal safety method, signal safety apparatus and signal safety systemHITACHI LTD·Filed 2003·Granted Aug 29, 2006·20 cites·9 claims
- 1859US7006012B2Automatic train stop systemHITACHI LTD·Filed 2003·Granted Feb 28, 2006·21 cites·10 claims
- 1953US7280659B2Pseudorandom number generating apparatus or encryption or decryption apparatus using the sameHITACHI LTD·Filed 2002·Granted Oct 9, 2007·3 cites·32 claims
- 2043US2008063187A1Hash value generation device, program, and hash value generation methodYOSHIDA HIROTAKA·Filed 2007·Application pending·0 cites
- 2142US2019260715A1Computer system, connection apparatus, and processing method using transactionHITACHI LTD·Filed 2019·Application pending·0 cites
- 2239US2021089346A1Information processing apparatusHITACHI LTD·Filed 2020·Application pending·0 cites
- 2338US5228117AExpert system development support system and expert system environment utilizing a frame processing techniqueHITACHI LTD·Filed 1991·Granted Jul 13, 1993·5 cites·8 claims
- 2434US5506938AExpert system development support system and expert system environment utilizing a frame processing techniqueHITACHI LTD·Filed 1994·Granted Apr 9, 1996·3 cites·2 claims
- 2534US2002062182A1Support system and method for recovering a train, and information transmitting system in a trainFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →