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OTSUKA CHEMICAL CO LTD

Overview
  • Total Patents
    2,325
  • GoodIP Patent Rank
    4,462
  • Filing trend
    ⇧ 36.0%
About

OTSUKA CHEMICAL CO LTD has a total of 2,325 patent applications. It increased the IP activity by 36.0%. Its first patent ever was published in 1966. It filed its patents most often in Japan, WIPO (World Intellectual Property Organization) and China. Its main competitors in its focus markets macromolecular chemistry and polymers, organic fine chemistry and materials and metallurgy are CABOT CORP, ADMATECHS CO LTD and CITIES SERVICE CO.

Patent filings per year

Chart showing OTSUKA CHEMICAL CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Tada Yuji 102
#2 Nabeshima Akihiro 87
#3 Kameshima Takashi 73
#4 Maekawa Tsukasa 73
#5 Kameyama Yutaka 72
#6 Suzue Masayoshi 72
#7 Abe Yoshinobu 70
#8 Nishiuchi Kihachiro 65
#9 Yabuhara Tadao 65
#10 Kajihara Yasuhiro 64

Latest patents

Publication Filing date Title
WO2021044860A1 Coloring composition for black matrix, and color filter
WO2021020553A1 Heat-curable polyimide resin composition and molded article thereof
WO2020235344A1 Composite laminate and method for producing same
WO2020235343A1 Composite laminate and method for producing same
JP2020100820A Rubber composition for tire side wall, tire side wall and tire
TW202031476A Substrate for forming transparent conductive layer, transparent conductive film, touch panel, and method for manufacturing substrate for forming transparent conductive layer
WO2020116144A1 Method for producing organic tellurium compound and method for producing vinyl polymer
JP2020079238A Crystallization method controlling crystallization rate of 3-alkenylcephem compound
WO2020075748A1 Cyclic phosphazene compound, flame retardant for resin, resin composition including same, and molding of said resin composition
JP2020076069A Adhesive film and surface protective film
WO2020045575A1 Rubber composition, rubber material, use of same and additive
WO2020031633A1 Dispersant composition, coloring composition and color filter
WO2020031634A1 Dispersant composition, coloring composition and color filter
WO2020013263A1 Bleeding inhibitor, flame retardant for resins, resin composition and molded body of same
JP2021004308A Block copolymer, dispersant, coloring composition and color filter
WO2020004440A1 Polyimide resin composition and molded body of same
JP2020203966A Friction material composition, friction material, and friction member
JP2020200358A Rubber composition, and tire
JP2020189946A (meth)acrylic resin composition
JP2020180215A Surface modifier composition