Patents by Inventor Masao Hirano

Masao Hirano 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).

  • Thermoplastic elastomer composition
    Patent number: 4108947
    Abstract: A thermoplastic elastomer composition consisting essentially of (A) 2 to 50% by weight of a polybutadiene having a 1,2-addition unit content of 70% or more, (B) 20 to 90% by weight of an olefinic rubber and (C) 5 to 60% by weight of a polyolefin resin, 30 to 95% by weight of the total polymer components, up to 90% by weight of said polybutadiene and up to 90% by weight of said olefinic rubber being soluble in Tetralin when the composition is heated at 210.degree. C for 3 hours in Tetralin under reflux. Said composition is excellent in mechanical strength, weather resistance, oil resistance, heat stability and processability and has a small permanent set.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: August 22, 1978
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Kazuo Kimura, Masao Hirano, Isao Sugita, Ryuzo Fujita
  • Field effect mode liquid crystal display materials
    Patent number: 4088393
    Abstract: A redox dopant for incorporation into the electrolytic conducting medium of an electro-optical display to increase the life of the electrodes in the same. Suitable dopants include ascorbic acid, hydroquinone, or parabenzoquinone incorporated into the twist nematic liquid crystal layer of a field effect display device.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: May 9, 1978
    Assignee: Omron Tateisi Electronics Co.
    Inventor: Masao Hirano