Patents by Inventor Tetsuo Kadoya

Tetsuo Kadoya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing a substrate for optical recording media
    Patent number: 4743409
    Abstract: A process for preparing a substrate for optical recording media which comprises injection-molding a polyvinylacetal resin resulting from acetalization of polyvinylalcohol to a degree of at least 60 mole % with at least one acetalizing agent selected from the group consisting of aliphatic aldehydes, alicyclic aldehydes, aromatic aldehydes and heterocyclic aldehydes.
    Type: Grant
    Filed: June 10, 1986
    Date of Patent: May 10, 1988
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shigeru Nomura, Tetsuo Kadoya, Takeo Kinoshita
  • Agricultural covering multilayer film or sheet structure and method for thermal insulation
    Patent number: 4250661
    Abstract: A covering multilayer film or sheet structure for agricultural application, which consists essentially of:(1) a film or sheet of a resin composition comprising (A) 100 parts by weight of a thermoplastic resin selected from the group consisting of olefinic resins and vinyl chloride resins and (B) about 1 to about 40 parts by weight of an acetal resin, and(2) a layer of the thermoplastic resin (A) laminated to at least one surface of the film or sheet (1); and a method for maintaining an agricultural locus at temperatures suitable for the growth of plants, using aforesaid covering multilayer film or sheet.
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: February 17, 1981
    Assignee: Sekisui Kagaku Kogyo K.K.
    Inventors: Yoshiaki Kodera, Kiyoyuki Watanabe, Tetsuo Kadoya, Tadashi Taguchi
  • Agricultural covering multilayer film or sheet structure and method for thermal insulation
    Patent number: 4214034
    Abstract: A covering multilayer film or sheet structure for agricultural application, which consists essentially of:(1) a film or sheet of a resin composition comprising (A) 100 parts by weight of a thermoplastic resin selected from the group consisting of olefinic resins and vinyl chloride resins and (B) about 1 to about 40 parts by weight of an acetal resin,and(2) a layer of the thermoplastic resin (A) laminated to at least one surface of the film or sheet (1); and a method for maintaining an agricultural locus at temperatures suitable for the growth of plants, using aforesaid covering multilayer film or sheet.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: July 22, 1980
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshiaki Kodera, Kiyoyuki Watanabe, Tetsuo Kadoya, Tadashi Taguchi