Inventor · disambiguated record
Hiroshi Utsumi
Also filed as: UTSUMI HIROSHI
19 granted patents·1 pending application·346 citations·filing 1975–2012
95Inventor score
Files withNITTO CHEMICAL INDUSTRY CO LTD15MITSUBISHI RAYON CO3DAINIPPON INK & CHEMICALS1HIRAMOTO TAKESHI1
Top patents by PatentIndex Score
20 records- 0194US3988359ACatalyst for use in and process for preparing acrylonitrileNITTO CHEMICAL INDUSTRY CO LTD·Filed 1975·Granted Oct 26, 1976·38 cites·10 claims
- 0291US5094990AIron-antimony-phosphorus-containing metal oxide catalyst for oxidationNITTO CHEMICAL INDUSTRY CO LTD·Filed 1990·Granted Mar 10, 1992·47 cites·10 claims
- 0384US4330429AProcess for regenerating an antimony containing oxide catalystNITTO CHEMICAL INDUSTRY CO LTD·Filed 1980·Granted May 18, 1982·32 cites·4 claims
- 0479US4049575AProcess of producing antimony-containing oxide catalystsNITTO CHEMICAL INDUSTRY CO LTD·Filed 1975·Granted Sep 20, 1977·27 cites·22 claims
- 0578US4590173AProcess for producing antimony-containing oxide catalyst supported on silica for use in fluidized bed reactionNITTO CHEMICAL INDUSTRY CO LTD·Filed 1985·Granted May 20, 1986·28 cites·8 claims
- 0677US4083804ACatalyst for use in and process for preparing acrylonitrileNITTO CHEMICAL INDUSTRY CO LTD·Filed 1976·Granted Apr 11, 1978·24 cites·4 claims
- 0768US4946819APhosphorus-antimony-containing catalyst for oxidationNITTO CHEMICAL INDUSTRY CO LTD·Filed 1988·Granted Aug 7, 1990·22 cites·7 claims
- 0868US4370279AProcess for production of acrylonitrileNITTO CHEMICAL INDUSTRY CO LTD·Filed 1978·Granted Jan 25, 1983·18 cites·34 claims
- 0967US6392048B1Process for preparing carbocyclic or heterocyclic nitriles by vapor phase ammoxidationMITSUBISHI RAYON CO·Filed 2000·Granted May 21, 2002·3 cites·5 claims
- 1066US6187943B1Process for preparing carbocyclic or heterocyclic nitriles by vapor phase ammoxidationMITSUBISHI RAYON CO·Filed 1997·Granted Feb 13, 2001·10 cites·5 claims
- 1164US5002847AProcess of producing electrophotographic toners comprises ultrasonic mixing and suspension polymerizationDAINIPPON INK & CHEMICALS·Filed 1989·Granted Mar 26, 1991·14 cites·17 claims
- 1261US5139988AIron-antimony-containing metal oxide catalyst composition and process for producing the sameNITTO CHEMICAL INDUSTRY CO LTD·Filed 1991·Granted Aug 18, 1992·21 cites·11 claims
- 1359US5158787AProcess for the production of hydrogen cyanideNITTO CHEMICAL INDUSTRY CO LTD·Filed 1989·Granted Oct 27, 1992·11 cites·13 claims
- 1455US4826802AMethod for preparation of antimony and tellurium-containing metal oxide catalystsNITTO CHEMICAL INDUSTRY CO LTD·Filed 1988·Granted May 2, 1989·13 cites·5 claims
- 1554US4461752AProcess for the production of hydrogen cyanideNITTO CHEMICAL INDUSTRY CO LTD·Filed 1983·Granted Jul 24, 1984·11 cites·14 claims
- 1652US4419267AProcess for regenerating antimony containing oxide catalyst comprising an aqueous ammonia impregnationNITTO CHEMICAL INDUSTRY CO LTD·Filed 1981·Granted Dec 6, 1983·10 cites·7 claims
- 1750US2013139340A1Brush fiber, brush using brush fiber, and method for manufacturing brush fiberHIRAMOTO TAKESHI·Filed 2012·Application pending·0 cites
- 1848US4590175AProcess for the production of antimony-containing metal oxide catalystsNITTO CHEMICAL INDUSTRY CO LTD·Filed 1984·Granted May 20, 1986·6 cites·23 claims
- 1947US4981830AProcess for preparing iron-antimony-phosphorus-containing catalyst for fluidized bed processNITTO CHEMICAL INDUSTRY CO LTD·Filed 1988·Granted Jan 1, 1991·9 cites·2 claims
- 2032US5976482AProcess for production of prussic acidMITSUBISHI RAYON CO·Filed 1998·Granted Nov 2, 1999·2 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →