Learn more

TOYO STAUFFER CHEM CO

Overview
  • Total Patents
    201
About

TOYO STAUFFER CHEM CO has a total of 201 patent applications. Its first patent ever was published in 1973. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets macromolecular chemistry and polymers, machines and organic fine chemistry are FANTA GEORGE FREDERICK, RIEGER BERNHARD and SPHERILENE SRL.

Patent filings per year

Chart showing TOYO STAUFFER CHEM COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Takitani Masaru 61
#2 Takahashi Yoshikazu 36
#3 Tomiyasu Shizuo 29
#4 Yamane Takeo 28
#5 Baba Keikichi 26
#6 Ishimaru Kenji 26
#7 Ikeda Yoshihiko 25
#8 Sunada Yoichi 22
#9 Kaji Eiichi 21
#10 Kachi Eiichi 14

Latest patents

Publication Filing date Title
JP2001039942A Production of bis(perfluoroalkylsulfonyl)methane
JP2000302789A Production of aluminoxane
JP2000302788A Production of aluminoxane
JP2000302790A Production of aluminoxane
JP2000302872A Preparation of aluminoxane
JP2000302871A Preparation of aluminoxane
JP2000119323A Catalyst component for polymerizing alpha-olefin
JP2000007597A Stereoselective production of optically active alcohol
US6420500B1 Catalyst for α-olefin polymerization
JPH10316686A Production of trityltetrakis (pentafluorophenyl)borate
JPH09295985A Production of tetrakis(pentaflurophenyl) borate derivative by using halogenated alkyl
JPH09295984A Production of tetrakis(pentafluorophenyl) borate derivative using pentafluorophenylmagnesiium derivative
JPH08231454A Production of biphenyl compound
JPH08165108A Coagulated crystals of calcium hydrogenphosphate dihydrate and its production
JPH07300485A Chiral zinc compound
EP0604962A1 Method of producing tris(pentafluorophenyl)borane using pentafluorophenyl alkyli metal salt prepared from pentafluorobenzene
US5493056A Method of producing tetrakis (pentafluorophenyl) borate derivatives using pentafluorophenyl alkali metal salt prepared from pentafluorobenzene
US5510536A Production method of tris(pentafluorophenyl)borane using pentafluorophenylmagnesium derivatives prepared from pentafluorobenzene
US5362423A Method of producing pentafluorophenylmagnesium derivatives using pentafluorobenzene
US5387727A Method of producing pentafluorophenyl alkali metal salt using pentafluorobenzene in a chain ether type solvent