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TAMURA YASUMITSU

Overview
  • Total Patents
    52
About

TAMURA YASUMITSU has a total of 52 patent applications. Its first patent ever was published in 1973. It filed its patents most often in Japan, EPO (European Patent Office) and United States. Its main competitors in its focus markets organic fine chemistry and environmental technology are MATSUMOTO MASAKATSU, SHANGHAI HAOYUAN CHEMEXPRESS CO LTD and KOORIYAMA KASEI KK.

Patent filings in countries

World map showing TAMURA YASUMITSUs patent filings in countries
# Country Total Patents
#1 Japan 47
#2 EPO (European Patent Office) 3
#3 United States 2

Patent filings per year

Chart showing TAMURA YASUMITSUs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Tamura Yasumitsu 52
#2 Kita Yasuyuki 30
#3 Haruta Junichi 9
#4 Haruta Jiyunichi 7
#5 Sashiyou Manabu 6
#6 Fujita Masatsune 5
#7 Akai Shuji 5
#8 Chin Rinkei 5
#9 Wada Akimori 5
#10 Fukunaga Keiko 5

Latest patents

Publication Filing date Title
US5191074A β-lactam compounds and production process thereof
JPH04290891A New anthracycline-based compound
JPH0273057A Preparation of intermediate for synthesizing carbapenem antibiotic
JPH0193586A Carbapenem compound and its production
JPS6426591A Anthracyclines or anthracyclinones not containing hydroxyl group at 11-position
JPS63307873A Sulfur-containing heteroanthracycline derivative and production thereof
JPS63218659A Beta-lactam compound and production thereof
JPS6379890A Production of optically active hexanoic acid derivative
JPS62258355A Nitrogen-containing heteroanthracycline derivative and production thereof
JPS6299343A Homophthalic acid derivative and acid anhydride thereof
JPS61212537A Production of alpha-arylalkanoic acid ester
JPS61212538A Production of alpha-arylalkanoic acid ester
JPS61118345A Cyclohexene derivative
JPS60130586A Production of naphthacenequinone derivative
JPS60105645A Production of arylsuccinic acid ester
JPS59163345A Production of alpha-arylalkanoic acid ester
JPS597182A Preparation of naphthacenequinone derivative
JPS597183A Naphthacenequinone derivative and its preparation
JPS58124736A Preparation of naphthacenequinone derivative
JPS58110536A Naphthacenequinone derivative