Inventor · disambiguated record
Keiko Shioi
Also filed as: SHIOI KEIKO
6 granted patents·222 citations·filing 1979–1984
86Inventor score
Technology areasC09D
Files withSAKURA COLOR PROD CORP6
Top patents by PatentIndex Score
6 records- 0190US4256494AErasable ink composition for writing on an impervious surfaceSAKURA COLOR PROD CORP·Filed 1979·Granted Mar 17, 1981·60 cites·7 claims
- 0288US4657591AInk compositionSAKURA COLOR PROD CORP·Filed 1984·Granted Apr 14, 1987·50 cites·17 claims
- 0385US4545819AWriting implement containing dual color ink compositionSAKURA COLOR PROD CORP·Filed 1984·Granted Oct 8, 1985·41 cites·20 claims
- 0480US4490177ADual color ink compositionSAKURA COLOR PROD CORP·Filed 1983·Granted Dec 25, 1984·34 cites·16 claims
- 0575US4604139ADual color ink compositionSAKURA COLOR PROD CORP·Filed 1982·Granted Aug 5, 1986·27 cites·16 claims
- 0648US4525215AInk compositionSAKURA COLOR PROD CORP·Filed 1984·Granted Jun 25, 1985·10 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →