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EISAI KAGAKU KK

Overview
  • Total Patents
    71
About

EISAI KAGAKU KK has a total of 71 patent applications. Its first patent ever was published in 1986. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets organic fine chemistry, environmental technology and pharmaceuticals are A M S A ANONIMA MATERIE SINT E, CHONGQING HUABANG SHENGKAI PHARMACEUTICAL CO LTD and GENCHEM CHANGZHOU CO LTD.

Patent filings in countries

World map showing EISAI KAGAKU KKs patent filings in countries

Patent filings per year

Chart showing EISAI KAGAKU KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Seki Chiaki 21
#2 Hamamura Kimio 19
#3 Kanai Takeo 16
#4 Konishi Masayuki 16
#5 Tsujii Masahiko 13
#6 Urawa Yoshio 13
#7 Ichino Tomio 10
#8 Tsuruki Tomio 9
#9 Yamagishi Yoji 8
#10 Shinohara Homare 8

Latest patents

Publication Filing date Title
JPH10182544A Production of p-acylalkylbenzene derivative
JPH10152490A Production of cephem compound
CA2216259A1 Production process of cephem compound
JPH09241190A Production of fluoro compound
JPH07291902A Production of allylquinone derivative and intermediate
JPH08151354A Production of aminoacetamide derivative
JPH0867676A Protected aminothiazolylacetic acid derivative
JPH07223993A Production of naphthoquinone derivative and intermediate thereof
CA2117412A1 Preparation process of naphthoquinone derivative and intermediate for the preparation thereof
JPH07223992A Production of 2-methyl-1,4-naphthoquinone
JPH0789948A Production of 2-amino-6-hydroxybenzothiazole
JPH0761951A Biphenylcarboxylic acid ester derivative
JPH0761977A Biphenyloxazoline derivative
JPH07185335A Cleaning method of synthetic adsorbent and cleaned synthetic adsorbent
JPH0761952A Production of halomethylbiphenylcarboxylic acid ester derivative
JPH07188249A Purification of cephalosporin compound
JPH06234765A Production of imidazopyridine derivative and intermediate thereof
JPH0761984A Production of imidazopyridine derivative and intermediate therefor
JPH06312950A Production of quinone derivative and intermediate
JPH06211820A Production of aminothiadiazolyl acid halide derivative