Patents by Inventor Kazuo Kakinuma

Kazuo Kakinuma 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).

  • Primer compositions
    Patent number: 5089569
    Abstract: A primer composition usable for steel sheets and plastic sheets in vehicle bodies consists essentially of a component (A) consisting essentially of at least one resin having a glass transition temperature of not higher than -20.degree. C., preferably not lower than -75.degree. C., and an elongation at break of not less than 400% preferably not greater than 900%, at 20.degree. C. and a component (B) consisting essentially of at least one crosslinking resin, the weight ratio of solid content of (A) to (B) being 70-99:30-1.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: February 18, 1992
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma
  • Primer compositions
    Patent number: 5068287
    Abstract: A primer composition usable for steel sheets and plastic sheets in vehicle bodies consists essentially of a component (A) consisting essentially of at least one resin having a glass transition temperature of not higher than -20.degree. C., preferably not lower than -75.degree. C., and an elongation at break of not less than 400% preferably not greater than 900%, at 20.degree. C. and a component (B) consisting essentially of at least one crosslinking resin, the weight ratio of solid content of (A) to (B) being 70-99:30-1.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: November 26, 1991
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma
  • Primer compositions
    Patent number: 4985500
    Abstract: A primer composition usable for steel sheets and plastic sheets in vehicle bodies consists essentially of a component (A) consisting essentially of at least one resin having a glass transition temperature of not higher than -20.degree. C., preferably not lower than -75.degree. C., and an elongation at break of not less than 400%, preferably not greater than 900%, at 20.degree. C. and a component (B) consisting essentially of at least one crosslinking resin, the weight ratio of solid content of (A) to (B) being 70-99:30-1.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: January 15, 1991
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma
  • Primer compositions
    Patent number: 4883834
    Abstract: A primer composition usable for steel sheet and plastic sheet in vehicle bodies consists essentially of a component A composed of a resin obtained by graft-polymerizing a styrene-butadiene-styrene block copolymer or its hydrogenated polymer with .alpha.,.beta.-unsaturated carboxylic acid or its anhydride, a component B of a crosslinking agent and a component C of an epoxy compound, and has particular weight ratios as solid content of component A to component B and components A+B to component C.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: November 28, 1989
    Assignee: Nippon Oil and Fats Company, Limited
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta
  • Primer compositions
    Patent number: 4874818
    Abstract: A primer composition usable for steel sheet and plastic sheet in vehicle bodies consists mainly of a polycaprolactone graft polymer obtained by graft-polymerizing a styrene-butadiene-styrene block copolymer or its hydrogenated polymer with a ring-opened polymer of .epsilon.-caprolactone and having a grafting ratio of the ring-opened polymer within a range of 0.5.about.50% by weight.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: October 17, 1989
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma, Hiroshi Ishioka, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta
  • Primer compositions
    Patent number: 4830778
    Abstract: A primer composition usable for steel sheets and plastic sheets in vehicle bodies consists essentially of a component (A) consisting essentially of at least one resin having a glass transition temperature of not higher than -20.degree. C., preferably not lower than -75.degree. C., and an elongation at break of not less than 400%, preferably not greater than 900%, at 20.degree. C. and a component (B) consisting essentially of at least one crosslinking resin, the weight ratio as solid content of (A) to (B) being 70-99:30-1.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: May 16, 1989
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma
  • Method for finish coating on polyurethane formed articles
    Patent number: 4707381
    Abstract: A method for finish coating on polyurethane formed articles, which comprises formulating a finish coating composition so as to have a content of pyrrolidone or its derivative represented by the general formula ##STR1## in which R stands for hydrogen or an alkyl group having at the most 4 carbon atoms, in an amount of 5-40% by weight upon the coating, applying this finish coating composition on the polyurethane formed article directly and heating the so called polyurethane formed article at a temperature of at least 50.degree. C.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: November 17, 1987
    Assignees: Nippon Oil and Fats Co., Ltd., Nissan Motor Co., Ltd.
    Inventors: Takashi Toyama, Masashi Ohno, Kiminori Ishii, Shosaku Yamamoto, Kazuo Kakinuma
  • Primer compositions
    Patent number: RE34066
    Abstract: A primer composition usable for steel sheets and plastic sheets in vehicle bodies consists essentially of a component (A) consisting essentially of at least one resin having a glass transition temperature of not higher than -20.degree. C., preferably not lower than -75.degree. C., and an elongation at break of not less than 400%, preferably not greater than 900%, at 20.degree. C. and a component (B) consisting essentially of at least one crosslinking resin, the weight ratio as solid content of (A) to (B) being 70-99:30-1.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: September 15, 1992
    Assignee: Nippon Oil & Fats Co., Ltd.
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma