Inventor · disambiguated record
Masaharu Doya
Also filed as: DOYA MASAHARU
13 granted patents·2 pending applications·147 citations·filing 1974–2020
92Inventor score
Top patents by PatentIndex Score
15 records- 0186US4165337AProcess for producing phthaloyl dichlorides of high purityMITSUBISHI GAS CHEMICAL CO·Filed 1977·Granted Aug 21, 1979·21 cites·4 claims
- 0283US4328374AProcess for the production of aromatic dialdehydesMITSUBISHI GAS CHEMICAL CO·Filed 1980·Granted May 4, 1982·19 cites·3 claims
- 0378US5489702AProcess for the production of dialkyl carbonateMITSUBISHI GAS CHEMICAL CO·Filed 1994·Granted Feb 6, 1996·20 cites·10 claims
- 0473US5969187AProcess for producing trans 1,4-bis(aminomethyl)cyclohexaneMITSUBISHI GAS CHEMICAL CO·Filed 1998·Granted Oct 19, 1999·14 cites·5 claims
- 0573US4048033AProcess for preparing perchloromethylbenzeneMITSUBISHI GAS CHEMICAL CO·Filed 1974·Granted Sep 13, 1977·9 cites·11 claims
- 0671US4459423AProcess for producing α-amino acidsMITSUBISHI GAS CHEMICAL CO·Filed 1982·Granted Jul 10, 1984·9 cites·24 claims
- 0769US6174711B1Method for producing L-allysine acetalMITSUBISHI GAS CHEMICAL CO·Filed 1999·Granted Jan 16, 2001·11 cites·6 claims
- 0865US5349077AProcess for producing alkylene carbonatesMITSUBISHI GAS CHEMICAL CO·Filed 1993·Granted Sep 20, 1994·11 cites·6 claims
- 0962US4918196AProcess for recimization of an optically active alpha-amino acid amides and process for producing optically active alpha-amino acidsMITSUBISHI GAS CHEMICAL CO·Filed 1986·Granted Apr 17, 1990·10 cites·11 claims
- 1061US4029560AProcess for producing α,α,α,α',α',α'-hexachloroxyleneMITSUBISHI GAS CHEMICAL CO·Filed 1976·Granted Jun 14, 1977·14 cites·5 claims
- 1150US2023069167A1Method for co-producing iodine and saltTOHO EARTHTECH INC·Filed 2020·Application pending·0 cites
- 1248US5440004AMethod and apparatus for the production of alkylene carbonateMITSUBISHI GAS CHEMICAL CO·Filed 1994·Granted Aug 8, 1995·3 cites·5 claims
- 1348US2011172465A1Method for producing 3-methyl-cyclopentadecenones, method for producing (r)- and (s)- muscone, and method for producing optically active musconeDOYA MASAHARU·Filed 2009·Application pending·0 cites
- 1442US7750182B2Process for production of iodine compounds and process for production of high-purity 5-iodo-2-methylbenzoic acidMITSUBISHI GAS CHEMICAL CO·Filed 2004·Granted Jul 6, 2010·0 cites·10 claims
- 1537US4605477AElectrodialytic recovery of α-amino acid from its amideMITSUBISHI GAS CHEMICAL CO·Filed 1985·Granted Aug 12, 1986·6 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →