Inventor · disambiguated record
Takafumi Hirakawa
Also filed as: HIRAKAWA TAKAFUMI
11 granted patents·75 citations·filing 1990–2010
88Inventor score
Top patents by PatentIndex Score
11 records- 0186US5250707AProcess for preparing ε-caprolactoneUBE INDUSTRIES·Filed 1991·Granted Oct 5, 1993·36 cites·14 claims
- 0273US5245029AIon exchange purification method of aqueous caprolactam solutionUBE INDUSTRIES·Filed 1991·Granted Sep 14, 1993·15 cites·11 claims
- 0370US8362194B2Polymerizable composition and polythiocarbonate polythioetherUBE INDUSTRIES·Filed 2006·Granted Jan 29, 2013·1 cites·13 claims
- 0469US9012537B2Process for producing polyimide siloxane solution composition, and polyimide siloxane solution compositionTAKASAKI SUSUMU·Filed 2010·Granted Apr 21, 2015·3 cites·12 claims
- 0569US7385022B2Polythiocarbonate polythiolUBE INDUSTRIES·Filed 2007·Granted Jun 10, 2008·4 cites·9 claims
- 0657US5994553AMethod for preparing 2-mercaptothiazoleUBE INDUSTRIES·Filed 1998·Granted Nov 30, 1999·7 cites·18 claims
- 0756US8349995B2Polythiocarbonatepoly(thio)epoxideUBE INDUSTRIES·Filed 2006·Granted Jan 8, 2013·0 cites·16 claims
- 0854US7544761B2PolythiourethaneUBE INDUSTRIES·Filed 2005·Granted Jun 9, 2009·0 cites·10 claims
- 0950US5808092AProcess for preparing-1-ethyl-5-hydroxypyrazoleUBE INDUSTRIES·Filed 1997·Granted Sep 15, 1998·5 cites·10 claims
- 1048US5098607AProcess for stabilizing percarboxylic acidUBE INDUSTRIES·Filed 1990·Granted Mar 24, 1992·4 cites·15 claims
- 1126US5206425AProcess for preparing perpropionic acid solutionUBE INDUSTRIES·Filed 1991·Granted Apr 27, 1993·0 cites·25 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →