Inventor · disambiguated record
Hirohiko Sagawa
Also filed as: SAGAWA HIROHIKO
15 granted patents·2 pending applications·1,522 citations·filing 1993–2021
96Inventor score
Top patents by PatentIndex Score
17 records- 0197US6477239B1Sign language telephone deviceHITACHI LTD·Filed 2000·Granted Nov 5, 2002·217 cites·10 claims
- 0291US5734923AApparatus for interactively editing and outputting sign language information using graphical user interfaceHITACHI LTD·Filed 1996·Granted Mar 31, 1998·153 cites·16 claims
- 0391US5659764ASign language generation apparatus and sign language translation apparatusHITACHI LTD·Filed 1994·Granted Aug 19, 1997·140 cites·13 claims
- 0491US5544050ASign language learning system and methodHITACHI LTD·Filed 1993·Granted Aug 6, 1996·152 cites·13 claims
- 0589US6181778B1Chronological telephone systemHITACHI LTD·Filed 1995·Granted Jan 30, 2001·162 cites·33 claims
- 0688US5887069ASign recognition apparatus and method and sign translation system using sameHITACHI LTD·Filed 1995·Granted Mar 23, 1999·151 cites·30 claims
- 0788US5699441AContinuous sign-language recognition apparatus and input apparatusHITACHI LTD·Filed 1996·Granted Dec 16, 1997·164 cites·18 claims
- 0886US5953693ASign language generation apparatus and sign language translation apparatusHITACHI LTD·Filed 1997·Granted Sep 14, 1999·121 cites·5 claims
- 0983US6549887B1Apparatus capable of processing sign language informationHITACHI LTD·Filed 2000·Granted Apr 15, 2003·35 cites·11 claims
- 1079US5990878ASign language editing apparatusHITACHI LTD·Filed 1996·Granted Nov 23, 1999·94 cites·15 claims
- 1178US5481454ASign language/word translation systemHITACHI LTD·Filed 1993·Granted Jan 2, 1996·63 cites·12 claims
- 1273US5473705ASign language translation system and method that includes analysis of dependence relationships between successive wordsHITACHI LTD·Filed 1993·Granted Dec 5, 1995·57 cites·19 claims
- 1372US8150678B2Spoken document retrieval systemSAGAWA HIROHIKO·Filed 2008·Granted Apr 3, 2012·9 cites·13 claims
- 1457US8694323B2In-vehicle apparatusHATAOKA NOBUO·Filed 2007·Granted Apr 8, 2014·4 cites·4 claims
- 1554US2003191779A1Sign language education system and program thereforFiled 2003·Application pending·0 cites
- 1652US11835412B2Delicate work tool digitalization systemHITACHI LTD·Filed 2021·Granted Dec 5, 2023·0 cites·9 claims
- 1746US2016335578A1Program for creating work assistance dataHITACHI LTD·Filed 2014·Application pending·0 cites
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