Inventor · disambiguated record
Kiyotaka Oyama
Also filed as: OYAMA KIYOTAKA
28 granted patents·248 citations·filing 1977–1996
96Inventor score
Top patents by PatentIndex Score
28 records- 0188US4165311AAddition compound of dipeptide derivative and amino acid derivativeTOYO SODA MFG CO LTD·Filed 1978·Granted Aug 21, 1979·30 cites·21 claims
- 0284US4116768AProcess for producing a peptideSAGAMI CHEM RES·Filed 1977·Granted Sep 26, 1978·30 cites·3 claims
- 0381US4256836AAddition compound of dipeptide derivative and amino acid derivativeTOYO SODA MFG CO LTD·Filed 1979·Granted Mar 17, 1981·20 cites·21 claims
- 0478US4769486AMethod for racemizing an optically active amino acidTOYO SODA MFG CO LTD·Filed 1987·Granted Sep 6, 1988·23 cites·8 claims
- 0576US5739023AStabilized neutral metalloprotease composition, a method of making the composition, and a method of transporting the compositionHOLLAND SWEETENER CO·Filed 1996·Granted Apr 14, 1998·39 cites·14 claims
- 0670US4284721AMethod for manufacturing dipeptidesSAGAMI CHEM RES·Filed 1980·Granted Aug 18, 1981·23 cites·10 claims
- 0768US4212946AProcess for recovering proteaseSAGAMI CHEM RES·Filed 1978·Granted Jul 15, 1980·12 cites·9 claims
- 0857US4436925AAddition compound of dipeptide derivative and amino acid derivativeTOYO SODA MFG CO LTD·Filed 1980·Granted Mar 13, 1984·11 cites·9 claims
- 0946US5693485AEnzymatic coupling reaction of N-protected-L-aspartic acid and phenylalanine methyl esterHOLLAND SWEETENER CO·Filed 1996·Granted Dec 2, 1997·5 cites·18 claims
- 1046US5124082AMethod for preparation of α, β-unsaturated carboxylic acid containing fluorineTOSOH CORP·Filed 1987·Granted Jun 23, 1992·3 cites·7 claims
- 1146US4521514AProcess for producing an addition compound of a dipeptide ester and an amino acid esterTOYO SODA MFG CO LTD·Filed 1983·Granted Jun 4, 1985·7 cites·12 claims
- 1244US4935562AMethod for producing 4,4'-dibromobiphenylTOSOH CORP·Filed 1988·Granted Jun 19, 1990·2 cites·7 claims
- 1344US4212945AProcess for recovering proteaseSAGAMI CHEM RES·Filed 1978·Granted Jul 15, 1980·8 cites·9 claims
- 1442US4830720AMethod for purifying a dipeptide esterTOSOH CORP·Filed 1988·Granted May 16, 1989·5 cites·6 claims
- 1542US4594450AProcess for producing an α-halogeno-β-phenylpropionic acidTOYO SODA MFG CO LTD·Filed 1984·Granted Jun 10, 1986·2 cites·7 claims
- 1642US4534909AProcess for producing a halogen-containing ethylbenzene derivativeTOYO SODA MFG CO LTD·Filed 1984·Granted Aug 13, 1985·2 cites·19 claims
- 1741US5527689AEnzymatic coupling of L-phenylalanine methyl ester and N-benzyloxycarbonyl-aspartic acidHOLLAND SWEETENER CO·Filed 1994·Granted Jun 18, 1996·5 cites·20 claims
- 1840US5001289AShaped zeolite catalyst for liquid phase organic reactionsTOSOH CORP·Filed 1989·Granted Mar 19, 1991·6 cites·11 claims
- 1938US4487717AProcess for recovering a dipeptide derivativeTOYO SODA MFG CO LTD·Filed 1982·Granted Dec 11, 1984·5 cites·34 claims
- 2036US4810818AProcess for producing alpha-aspartyl-l-phenylalanine methyl ester having an improved solubilityTOYO SODA MFG CO LTD·Filed 1987·Granted Mar 7, 1989·3 cites·5 claims
- 2136US4536342AProcess for producing a halogen-containing ethylbenzene derivativeTOYO SODA MFG CO LTD·Filed 1984·Granted Aug 20, 1985·1 cites·5 claims
- 2235US4704471AProcess for producing DL-phenylalanineTOYO SODA MFG CO LTD·Filed 1986·Granted Nov 3, 1987·1 cites·11 claims
- 2334US4835301AProcess for producing stable α-L-aspartyl-L-phenylalanine methyl esterTOYO SODA MFG CO LTD·Filed 1987·Granted May 30, 1989·2 cites·7 claims
- 2431US4835303AProcess for producing dry α-L-aspartyl-L-phenylalanine methyl esterTOYO SODA MFG CO LTD·Filed 1987·Granted May 30, 1989·2 cites·8 claims
- 2529US4564471AMethod for reductive elimination of protecting groupsAJINOMOTO KK·Filed 1980·Granted Jan 14, 1986·0 cites·3 claims
- 2628US5347035AMethod for crystallizing α-L-aspartyl-L-phenylalanine methyl esterTOSOH CORP·Filed 1993·Granted Sep 13, 1994·0 cites·10 claims
- 2727US4940802A4,4'-bis(phthalimido)diphenyl sulfone compounds, processes for their production and flame retardant polymer compositions containing themTOSOH CORP·Filed 1988·Granted Jul 10, 1990·1 cites·10 claims
- 2826US4944852AMethod for purifying a dipeptide esterTOSOH CORP·Filed 1988·Granted Jul 31, 1990·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →