Inventor · disambiguated record
Hirofumi Shiigi
Also filed as: SHIIGI HIROFUMI
3 granted patents·0 citations·filing 2002–2012
44Inventor score
Top patents by PatentIndex Score
3 records- 0146US8258313B2Compound having hydantoin ring and method of producing the sameSHIIGI HIROFUMI·Filed 2008·Granted Sep 4, 2012·0 cites·13 claims
- 0242US8404860B2Compound having hydantoin ring and method of producing the sameSHIIGI HIROFUMI·Filed 2012·Granted Mar 26, 2013·0 cites·2 claims
- 0341US7220881B2Process for production of acid anhydrideTOKUYAMA CORP·Filed 2002·Granted May 22, 2007·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →