Patents by Inventor Sadao Nishita

Sadao Nishita 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).

  • Palladium complex, process for the preparation thereof and catalyst for producing 1,3-diene oligomers
    Patent number: 4277633
    Abstract: The palladium complex disclosed herein is bis[tri(ortho-tolyl)phosphine] :palladium which is produced by reacting a palladium salt with tri(ortho-tolyl)phosphine and reducing the resultant bis[tri(ortho-tolyl)phosphine] palladium salt with an alcoholic alkali. This complex is useful as a catalyst for the production of 1,3-diene oligomers.
    Type: Grant
    Filed: July 12, 1979
    Date of Patent: July 7, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Satoru Enomoto, Hisayuki Wada, Sadao Nishita, Yutaka Mukaida, Mikiro Yanaka, Hitoshi Takita
  • Palladium complex
    Patent number: 4196135
    Abstract: The palladium complex disclosed herein is bis[tri(orthotolyl)phosphine] palladium which is produced by reacting a palladium salt with tri(ortho-tolyl)phosphine and reducing the resultant bis[tri(ortho-tolyl)phosphine] palladium salt with an alcoholic alkali. This complex is useful as a catalyst for the production of 1,3-diene oligomers.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: April 1, 1980
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Satoru Enomoto, Hisayuki Wada, Sadao Nishita, Yutaka Mukaida, Mikiro Yanaka, Hitoshi Takita
  • Air drying high solid coating composition
    Patent number: 4140663
    Abstract: An air drying high solid coating composition containing 90% or more of solid components and consisting of (1) 95 - 50 parts by weight of low viscosity alkyd resin having an oil length of 60 or higher and a viscosity of Z.sub.4 or lower, (II) 5 - 50 parts by weight of 1,1-bis-(1'-methyl-2'-vinyl-4',6'-heptadienoxy)-alkane, and if necessary, (III) other components such as pigments, organic solvents and additives. The coating composition is quite effective in the prevention of air pollution and the saving of resources.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: February 20, 1979
    Assignee: Kureha Chemical Industry Co., Ltd.
    Inventors: Satoru Enomoto, Yutaka Mukaida, Mikiro Yanaka, Sadao Nishita, Hisayuki Wada, Hitoshi Takita
  • Air drying reaction product of a diisocyanate and 1-methyl-2-vinyl-4,6-heptadienol
    Patent number: 4069211
    Abstract: A composition including a diisocyanate and 1-methyl-2-vinyl-4,6-heptadienol. This composition is capable of curing in air at room temperature after aging in a dry nitrogen atmosphere.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: January 17, 1978
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Sadao Nishita, Satoru Enomoto, Hisayuki Wada, Yutaka Mukaida, Mikiro Yanaka, Hitoshi Takita
  • Alkyd resin composition comprising a 1,1-bis(1'-methyl-2'-vinyl-4',6'-heptadienoxy)alkane
    Patent number: 4021390
    Abstract: An alkyd resin composition including an alkyd resin and a 1,1-bis(1'-methyl-2'-vinyl-4',6'-heptadienoxy)alkane, useful as non-solvent type paint.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: May 3, 1977
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Satoru Enomoto, Yutaka Mukaida, Mikiro Yanaka, Sadao Nishita, Hisayuki Wada, Hitoshi Takita
  • 1,1-Bis(1-methyl-2-vinyl-4,6-heptadienoxy) alkane and method for the production thereof
    Patent number: 4008283
    Abstract: 1,1-BIS(1'-METHYL-2'-VINYL-4',6'-HEPTADIENOXY)ALKANE IS OBTAINED BY ACETAL FORMATION OF 1-METHYL-2-VINYL-4,6-HEPTADIENOL WITH AN ALDEHYDE. The 1,1-bis(1'-methyl-2'-vinyl-4',6'-heptadienoxy) alkane is a novel curing compound.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: February 15, 1977
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Satoru Enomoto, Yutaka Mukaida, Mikiro Yanaka, Sadao Nishita, Hisayuki Wada, Hitoshi Takita