Inventor · disambiguated record
Hiroyuki Hirayama
Also filed as: HIRAYAMA HIROYUKI
6 granted patents·61 citations·filing 1989–1991
83Inventor score
Files withMITSUBISHI GAS CHEMICAL CO6
Top patents by PatentIndex Score
6 records- 0183US4987256AProcess for production of α-hydroxycarboxylic acid amideMITSUBISHI GAS CHEMICAL CO·Filed 1990·Granted Jan 22, 1991·24 cites·11 claims
- 0275US4950801AProcess for producing alpha-hydroxycarboxylic acid amideMITSUBISHI GAS CHEMICAL CO·Filed 1989·Granted Aug 21, 1990·12 cites·7 claims
- 0367US4990651AProcess for producing carboxylic acid estersMITSUBISHI GAS CHEMICAL CO·Filed 1989·Granted Feb 5, 1991·9 cites·10 claims
- 0461US4973739AProcess for production of carboxylic acid estersMITSUBISHI GAS CHEMICAL CO·Filed 1989·Granted Nov 27, 1990·7 cites·7 claims
- 0555US5175366AProcess for producing a denaturated manganese dioxide catalyst for the hydration reaction of cyanohydrinsMITSUBISHI GAS CHEMICAL CO·Filed 1991·Granted Dec 29, 1992·5 cites·9 claims
- 0636US5061675AProcess for producing a denaturated manganese dioxide catalyst for the hydration reaction of cyanohydrinsMITSUBISHI GAS CHEMICAL CO·Filed 1990·Granted Oct 29, 1991·4 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →