Inventor · disambiguated record
Yoshiro Ashina
Also filed as: ASHINA YOSHIRO
4 granted patents·114 citations·filing 1982–1989
78Inventor score
Files withNITTO CHEMICAL INDUSTRY CO LTD4
Top patents by PatentIndex Score
4 records- 0192US4582936AProcess for producing dimethylamine in preference to mono- and trimethylamines by gas phase catalytic reaction of ammonia with methanolNITTO CHEMICAL INDUSTRY CO LTD·Filed 1984·Granted Apr 15, 1986·80 cites·8 claims
- 0278US4485261AProcess for producing methylaminesNITTO CHEMICAL INDUSTRY CO LTD·Filed 1982·Granted Nov 27, 1984·17 cites·10 claims
- 0363US5068442AMethod for maintaining the activity of zeolite catalystsNITTO CHEMICAL INDUSTRY CO LTD·Filed 1989·Granted Nov 26, 1991·8 cites·6 claims
- 0447US4578516AProcess for producing dimethylamine in preference to mono- or trimethylamine by vapor-phase catalytic reaction of methanol and ammoniaNITTO CHEMICAL INDUSTRY CO LTD·Filed 1984·Granted Mar 25, 1986·9 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →