Inventor · disambiguated record
Ryoichi Otsuka
Also filed as: OTSUKA RYOICHI
3 granted patents·1 pending application·2 citations·filing 2000–2012
51Inventor score
Technology areasC07C
Top patents by PatentIndex Score
4 records- 0159US6451109B1Columnar crystals of 6-hydroxy-2-naphthoic acid and process for manufacturing the sameUENO SEIYAKU OYO KENKYUJO KK·Filed 2000·Granted Sep 17, 2002·2 cites·9 claims
- 0243US8680325B2Process for preparing 2,5-dihydroxyterephthalic acidKITA YUSUKE·Filed 2012·Granted Mar 25, 2014·0 cites·6 claims
- 0338US7102028B2Method for producing 3,5-di-tert-butyl-4-hydroxybenzoic acidUENO SEIYAKU OYO KENKYUJO KK·Filed 2005·Granted Sep 5, 2006·0 cites·13 claims
- 0437US2006183939A1Process for production of hydroxybenzoic acidsUENO RYUZO·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →