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SUMIKA FINE CHEMICALS CO LTD

Overview
  • Total Patents
    354
About

SUMIKA FINE CHEMICALS CO LTD has a total of 354 patent applications. Its first patent ever was published in 1992. 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 ZHEJIANG HISOAR PHARMACEUTICAL CO LTD, A M S A ANONIMA MATERIE SINT E and HANGZHOU CHEMINSPIRE TECH CO LTD.

Patent filings per year

Chart showing SUMIKA FINE CHEMICALS CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Itaya Nobushige 90
#2 Hayashi Taketo 54
#3 Sugi Kiyoshi 51
#4 Katsura Tadashi 49
#5 Igi Masami 45
#6 Ikemoto Tetsuya 39
#7 Shintaku Tetsuya 38
#8 Yamazaki Shigeya 30
#9 Shiratani Hiroshi 26
#10 Saito Kenji 24

Latest patents

Publication Filing date Title
WO2004065346A1 Processes for the production of (-)-tetrahydrolipstatin and intermediates thereof
JP2005008530A Method for producing hexahydrofurofuranol derivative and intermediate therefor and method for producing the same
JP2004331554A Method for producing phthalazine
JP2004300101A Method for producing chloropyrimidine derivative
JP2004245468A Combustion method for by-product solvent, combustion device and boiler using the same
JP2004238322A Method for producing (r)-3-aminopentanenitrile methanesulfonic acid salt
JP2004224756A 2,6-dihalogeno-8-substituted-purine compound and method for producing the same
JP2004107315A Method for producing hexahydrofurofuranol derivative, its intermediate and method for producing the same
JP2004196682A 2-nitropurine compound and method for producing the same
US6649768B1 Production methods of imidazole compound and salt thereof and intermediates therefor
AU2002368373A1 Process for preparation of imidazoles and salts thereof and intermediates thereof
CN1982284A Production method of racemiation3-hydroxy-3- (2-phenylethyl) hexanoic acid C1-6 alkyl ester
WO03087029A1 PROCESS FOR PRODUCING α-HYDROXYCARBOXYLIC ACID COMPOUND
WO03029195A1 Intermediates for epothilone derivative and process for producing these
JP2004115476A Production method for (r)-3-halogeno-2-methylpropanol
JP2004107294A METHOD FOR PRODUCING 4,4'-ISOPROPYLIDENEDITHIOBIS[2,6-DI-tert-BUTYLPHENOL] AND INTERMEDIATE THEREFOR
JP2004018453A Alkynylpurine compound and its manufacturing method
CA2410443A1 Process for producing 2,6-dihalogenopurine
JP2003267907A Method for producing ketone
US6852862B2 Process for producing quinoline-3-carboxylic acid compound