Inventor · disambiguated record
Hiroshi Niizuma
Also filed as: NIIZUMA HIROSHI
9 granted patents·161 citations·filing 1979–2006
89Inventor score
Top patents by PatentIndex Score
9 records- 0184US6432870B1Process for preparing metal oxide catalyst for acrylic acid productionTOAGOSEI CO LTD·Filed 2000·Granted Aug 13, 2002·24 cites·2 claims
- 0283US6291393B1Catalyst for the production of acrylic acidTOAGOSEI CO LTD·Filed 2000·Granted Sep 18, 2001·24 cites·19 claims
- 0383US4266604AHeat exchanger with fluid tanks made of synthetic resinDIESEL KIKI CO·Filed 1979·Granted May 12, 1981·46 cites·9 claims
- 0479US4677225AProcess for the production of acrylic acid or methacrylic acidTOA GOSEI CHEM IND·Filed 1985·Granted Jun 30, 1987·36 cites·16 claims
- 0578US6346647B2Catalyst for the production of acrylic acidTOAGOSEI CO LTD·Filed 2001·Granted Feb 12, 2002·17 cites·2 claims
- 0675US7670752B2Photosensitive resin composition, composition for solder resist, and photosensitive dry filmTOAGOSEI CO LTD·Filed 2006·Granted Mar 2, 2010·4 cites·7 claims
- 0766US6512141B2Process for preparing metal oxide catalyst for acrylic acid productionTOAGOSEI CO LTD·Filed 2001·Granted Jan 28, 2003·6 cites·2 claims
- 0858US7375052B2Process for producing metal oxide catalystTOAGOSEI CO LTD·Filed 2004·Granted May 20, 2008·2 cites·6 claims
- 0957US7304180B2Process for producing metal oxide catalystTOAGOSEI CO LTD·Filed 2004·Granted Dec 4, 2007·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →