Inventor · disambiguated record
Hiroaki Tsugawa
Also filed as: TSUGAWA HIROAKI
4 granted patents·20 citations·filing 1985–2007
69Inventor score
Technology areasB41M
Top patents by PatentIndex Score
4 records- 0165US4682192AHeat-sensitive recording sheetNIPPON KAYAKU KK·Filed 1985·Granted Jul 21, 1987·15 cites·9 claims
- 0240US8216970B21,1-bis(4-hydroxyphenyl)-1-phenylethane and thermal recording material for recording the sameTSUGAWA HIROAKI·Filed 2007·Granted Jul 10, 2012·0 cites·5 claims
- 0334US4956333AHeat-sensitive recording materialNIPPON KAYAKU KK·Filed 1989·Granted Sep 11, 1990·2 cites·1 claims
- 0427US5928987AThermal recording materialNIPPON KAYAKU KK·Filed 1997·Granted Jul 27, 1999·3 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →