1
Toshio Koishi, Takashi Yasumura: Curable fluorine-containing copolymer and coating liquid composition using same. Central Glass Company, Fleit Jacobson Cohn & Price, December 23, 1986: US04631326 (29 worldwide citation)

Disclosed is a curable fluorine-containing copolymer, comprising 25-75 mol % of first repeating units which originate from chlorotrifluoroethylene, 10-70 mol % of second repeating units which originate from a vinyl or isopropenyl ester of fatty acid, such as vinyl acetate or isopropenyl acetate, 3-4 ...


2
Chikashi Kawashima, Takashi Yasumura: Elastic fluorohydrocarbon resin and method of producing same. Central Glass Company, Schwartz Jeffery Schwaab Mack Blumenthal & Koch, September 18, 1984: US04472557 (29 worldwide citation)

A fluorohydrocarbon resin that has elasticity and retains favorable properties of known fluorohydrocarbon polymers is obtained by graft copolymerization of a fluorine-containing elastomeric polymer with a fluorine-containing crystalline polymer. One of the elastomeric and crystalline polymers is pre ...


3
Kazuhiko Yamamoto, Kazumi Nejigaki, Takashi Yasumura, Chikashi Kawashima, Shuichi Inoue: Piezoelectric polymeric material. Central Glass Company, Schwartz Jeffery Schwaab Mack Blumenthal & Evans, December 24, 1985: US04560737 (25 worldwide citation)

A piezoelectric polymeric material in the form of sheet or film, which comprises polymers of vinylidene fluoride (VDF) as principle components. The piezoelectric material is essentially a mixture of 100 parts by weight of a VDF base resin, which may be either poly(VDF) or a copolymer, and 1-100 part ...


4
Takashi Yasumura, Toshio Koishi, Isao Tanaka: Polyvinylidene fluoride base blend polymer. Central Glass Company, Fleit Jacobson Cohn & Price, February 10, 1987: US04642326 (12 worldwide citation)

A blend polymer composition, which is superior to polyvinylidene fluoride (PVDF) in impact resistance and retains favorable properties of PVDF, is obtained by blending 1-100 parts, and preferably 1-50 parts, by weight of a copolymer of vinylidene fluoride (VDF) and hexafluoroacetone (HFA) with 100 p ...


5
Toshio Koishi, Isao Tanaka, Takashi Yasumura, Yukitoshi Nishikawa: Optical fiber having polymethacrylate core and fluoro-copolymer cladding. Central Glass Company, Fleit Jacobson Cohn & Price, August 18, 1987: US04687295 (10 worldwide citation)

The invention relates to an optical fiber of the step-index type in which the core material is poly(methyl methacrylate) or a copolymer of methyl methacrylate with another methacrylate or an acrylate. A copolymer of vinylidene fluoride with hexafluoroacetone is employed as the cladding material whic ...


6
Takashi Yasumura, Akira Takano: Compatibilizing agent, radical copolymerizable unsaturated resin composition, molding material, and molded article. Dainippon Ink and Chemicals, Armstrong Kratz Quintos Hanson & Brooks, November 9, 2004: US06815499 (8 worldwide citation)

An object of the present invention is to substantially improve the compatibility between a radical copolymerizable unsaturated resin and an addition polymerized polymer (thermoplastic resin) which is added for the purpose of low profile and improvement of physical properties. The present invention p ...


7
Akira Kawada, Takashi Yasumura, Toshio Koishi: Optical fiber having glass core and fluoro-copolymer cladding. Central Glass Company, Fleit Jacobson Cohn & Price, November 29, 1988: US04787709 (7 worldwide citation)

The invention relates to an optical fiber of the step-index type using quartz glass or an inorganic optical glass as the core material and a fluorine-containing resin as the cladding material. A copolymer of vinylidene fluoride with hexafluoroacetone, preferably at a molar ratio in the range from 96 ...


8
Takashi Yasumura, Takashi Tomiyama, Tetsuya Harada: Curable resin composition. DIC Corporation, Edwards Angell Palmer & Dodge, August 31, 2010: US07786225 (6 worldwide citation)

A curable resin composition, which is a solid resin at ordinary temperatures obtained by reacting an epoxy resin with a (meth)acrylic anhydride, contains an unsaturated resin having a (meth)acryloyl group (A) which has a double bond equivalent weight of 200 to 500, an ester number of 100 to 300, and ...


9
Akira Ishihara, Takeshi Asanawa, Satoshi Nakahata, Takashi Yasumura: Continuous process for preparing chlorotrifluoroethylene. Central Glass Company, Fleit Jacobson Cohn Price Holman & Stern, June 23, 1992: US05124494 (3 worldwide citation)

The subject is the preparation of chlorotrifluoroethylene (CTFE) by a known reaction of 1,1,2-trichloro-1,2,2,-trifluoroethane (R-113) with zinc powder dispersed in an alcohol such as methanol, and the object of the invention is industrially easily and smoothly carrying out the reaction in a continu ...


10
Takashi Yasumura, Akira Takano: Compatibilizing agent, radical copolymerizable unsaturated resin composition, molding material, and molded article. Dainippon Ink and Chemicals, Armstrong Westerman & Hattori, December 30, 2003: US06670428 (2 worldwide citation)

An object of the present invention is to substantially improve the compatibility between a radical copolymerizable unsaturated resin and an addition polymerized polymer (thermoplastic resin) which is added for the purpose of low profile and improvement of physical properties. The present invention p ...