Inventor · disambiguated record
Toshiaki Chai
Also filed as: CHAI TOSHIAKI
3 granted patents·105 citations·filing 1998–2001
75Inventor score
Top patents by PatentIndex Score
3 records- 0169US6947029B2Handwritten data input device and method, and authenticating device and methodKATAGIRI MASAJI·Filed 2001·Granted Sep 20, 2005·31 cites·24 claims
- 0255US6393138B1Method of creating registration signature data for computerized signature collation schemeCADIX INC·Filed 1998·Granted May 21, 2002·51 cites·18 claims
- 0336US6563939B1Electronic signature verification method and systemCYBER SIGN JAPAN INC·Filed 1998·Granted May 13, 2003·23 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →