Inventor · disambiguated record
Hiroshi Ichihashi
Also filed as: ICHIHASHI HIROSHI
22 granted patents·349 citations·filing 1972–2003
96Inventor score
Files withSUMITOMO CHEMICAL CO22
Top patents by PatentIndex Score
22 records- 0196US4010238AProces for selective removal of nitrogen oxides from waste gasesSUMITOMO CHEMICAL CO·Filed 1974·Granted Mar 1, 1977·93 cites·13 claims
- 0290US4003978AMethod for treating ammonia-containing gasesSUMITOMO CHEMICAL CO·Filed 1974·Granted Jan 18, 1977·58 cites·6 claims
- 0379US6531595B2Method for producing ε-caprolactam and reactor for the methodSUMITOMO CHEMICAL CO·Filed 2001·Granted Mar 11, 2003·11 cites·8 claims
- 0474US4665274AMethod for producing cycloolefinsSUMITOMO CHEMICAL CO·Filed 1986·Granted May 12, 1987·27 cites·11 claims
- 0574US4575572AMethod for producing cycloolefinsSUMITOMO CHEMICAL CO·Filed 1985·Granted Mar 11, 1986·11 cites·21 claims
- 0672US4968793AProcess for producing ε-caprolactamSUMITOMO CHEMICAL CO·Filed 1990·Granted Nov 6, 1990·13 cites·16 claims
- 0770US3951861ACatalysts for the preparation of acroleinSUMITOMO CHEMICAL CO·Filed 1974·Granted Apr 20, 1976·20 cites·10 claims
- 0867US6344586B1Process for producing adipic acidSUMITOMO CHEMICAL CO·Filed 1999·Granted Feb 5, 2002·9 cites·11 claims
- 0963US6303099B1Process for producing pentacyl-type crystalline zeolites and a process for producing ε-caprolactam using the sameSUMITOMO CHEMICAL CO·Filed 2000·Granted Oct 16, 2001·20 cites·9 claims
- 1063US4565801AHeteropoly-acids and their production and useSUMITOMO CHEMICAL CO·Filed 1982·Granted Jan 21, 1986·6 cites·9 claims
- 1162US6946553B2Process for producing ε-caprolactam and catalyst for the productionSUMITOMO CHEMICAL CO·Filed 2003·Granted Sep 20, 2005·4 cites·26 claims
- 1259US5403801AProcess for producing ε-caprolactam and activating solid catalysts thereforSUMITOMO CHEMICAL CO·Filed 1993·Granted Apr 4, 1995·16 cites·12 claims
- 1359US5071802ARegeneration of catalysts by burning in the presence of alcoholsSUMITOMO CHEMICAL CO·Filed 1990·Granted Dec 10, 1991·7 cites·11 claims
- 1456US5212302AProcess for producing epsilon-caprolactam and activating solid catalysts thereforSUMITOMO CHEMICAL CO·Filed 1991·Granted May 18, 1993·14 cites·17 claims
- 1555US4306088AProduction of methacroleinSUMITOMO CHEMICAL CO·Filed 1980·Granted Dec 15, 1981·12 cites·11 claims
- 1652US6482945B2Process for producing epsilon-caprolactam and apparatus for the processSUMITOMO CHEMICAL CO·Filed 2001·Granted Nov 19, 2002·1 cites·7 claims
- 1746US5354859Aε-caprolactamSUMITOMO CHEMICAL CO·Filed 1992·Granted Oct 11, 1994·8 cites·18 claims
- 1845US3968166ACatalytic process for the preparation of acroleinSUMITOMO CHEMICAL CO·Filed 1975·Granted Jul 6, 1976·8 cites·16 claims
- 1941US3970702ACatalytic process for the preparation of acroleinSUMITOMO CHEMICAL CO·Filed 1974·Granted Jul 20, 1976·2 cites·11 claims
- 2039US4992252AMethod for production of hydroxylammonium saltSUMITOMO CHEMICAL CO·Filed 1989·Granted Feb 12, 1991·5 cites·11 claims
- 2138US5066630AMethod for removing nitrogen-containing organic compounds from crystalline metallosilicateSUMITOMO CHEMICAL CO·Filed 1990·Granted Nov 19, 1991·4 cites·4 claims
- 2230US4058547ACatalytic process for the production of acrylonitrileSUMITOMO CHEMICAL CO·Filed 1972·Granted Nov 15, 1977·0 cites·29 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →