Inventor · disambiguated record
Keizo Takayanagi
Also filed as: KIJIMA SHIZUMASA · TAKAYANAGI KEIZO
5 granted patents·47 citations·filing 1978–2000
77Inventor score
Files withEISAI CO LTD5
Top patents by PatentIndex Score
5 records- 0181US6180652B1Sulfoxide compounds and acetone complexes, and a process for producing the sameEISAI CO LTD·Filed 1999·Granted Jan 30, 2001·32 cites·9 claims
- 0275US6545024B1Sulfoxide compounds and acetone complexes, and a process for producing the sameEISAI CO LTD·Filed 2000·Granted Apr 8, 2003·8 cites·11 claims
- 0360US4163864AProcess for preparing 2-methyl-3-prenyl-4,5,6-trimethoxyphenolEISAI CO LTD·Filed 1978·Granted Aug 7, 1979·6 cites·2 claims
- 0437US4721788A4-cyanopiperidine derivativesEISAI CO LTD·Filed 1986·Granted Jan 26, 1988·1 cites·5 claims
- 0528US4433142AProcess for the preparation of 7-(2-amino-2-phenylacetamido) cephem derivativesEISAI CO LTD·Filed 1982·Granted Feb 21, 1984·0 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →