Inventor · disambiguated record
Kotaro Sumitomo
Also filed as: SUMITOMO KOTARO
6 granted patents·2 pending applications·2 citations·filing 2004–2008
67Inventor score
Top patents by PatentIndex Score
8 records- 0165US7291210B2Solid drawing material and method for producing the sameSAKURA COLOR PROD CORP·Filed 2005·Granted Nov 6, 2007·1 cites·10 claims
- 0263US8431632B2CrayonSUMITOMO KOTARO·Filed 2008·Granted Apr 30, 2013·1 cites·8 claims
- 0353US7943684B2Process for production of black crayonSAKURA COLOR PROD CORP·Filed 2007·Granted May 17, 2011·0 cites·7 claims
- 0449US8299143B2Crayon and process for producing the sameSUMITOMO KOTARO·Filed 2007·Granted Oct 30, 2012·0 cites·8 claims
- 0549US8242190B2Crayon and process for producing the sameSUMITOMO KOTARO·Filed 2007·Granted Aug 14, 2012·0 cites·6 claims
- 0648US2009209678A1CrayonSAKURA COLOR PROD CORP·Filed 2007·Application pending·0 cites
- 0738US2005197423A1Photostorage solid drawing mediumFiled 2004·Application pending·0 cites
- 0829US7485406B2Photostorage solid drawing mediumSAKURA COLOR PROD CORP·Filed 2006·Granted Feb 3, 2009·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →