Patents by Inventor Nakaba Asahara

Nakaba Asahara 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).

  • Aromatic polyester
    Patent number: 4258154
    Abstract: A resin composition consisting essentially of (A) an aromatic polyester-polycarboxylic anhydride and (B) a polyamide. An article molded from the resin composition exhibits high heat resistance, mechanical properties and moldability. It is particularly resistant to cracking upon impact and is also resistant to breaking at a thin-walled portion.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: March 24, 1981
    Assignee: Unitika Ltd.
    Inventors: Kayomon Kyo, Nakaba Asahara, Yasuhiko Asai, Isamu Hirose, Sadao Kato
  • Resin composition
    Patent number: 4206100
    Abstract: A resin composition consisting essentially of(A) an aromatic copolyester derived from (1) a mixture of terephthalic acid and isophthalic acid and/or the functional derivatives thereof and (2) a bisphenol and/or the functional derivatives thereof;(B) a polyamide; and(C) a compound of a metal of Groups IVB, VB, VIB, VIIB, VIII, IB, IIB, IIIA, IVA or VA of the Periodic Table.An article molded from the resin composition exhibits high heat resistance, mechanical properties and moldability. It is particularly resistant to cracking upon impact, and is also resistant to breaking at a thin walled portion.
    Type: Grant
    Filed: December 7, 1978
    Date of Patent: June 3, 1980
    Assignee: Unitika Ltd.
    Inventors: Kayomon Kyo, Nakaba Asahara, Yasuhiko Asai, Isamu Hirose, Kenichirou Nakamoto
  • Aromatic copolyester composition
    Patent number: 4097431
    Abstract: An aromatic copolyester composition comprising (A) an aromatic copolyester derived from terephthalic acid, isophthalic acid and a bisphenol and (B) a phosphite compound, or an aromatic copolyester composition comprising components (A) and (B) plus (C) a metal salt of an organic carboxylic acid. Molded articles prepared from such aromatic copolyester compositions have superior mechanical properties and fire retardancy and reduced coloration and crazing.
    Type: Grant
    Filed: July 30, 1976
    Date of Patent: June 27, 1978
    Assignee: Unitika Ltd.
    Inventors: Nakaba Asahara, Hiroyuki Takao, Kenji Yasue
  • Resin composition and a process for preparing same
    Patent number: 4052481
    Abstract: A resin composition comprising (A) an aromatic copolyester comprising the reaction product in about equimolar amounts of (1) terephthalic acid and/or the functional derivatives thereof, isophthalic acid and/or the functional derivatives thereof and (2) a bisphenol and/or the functional derivatives thereof, (B) a polyamide, and (C) a polyalkylene phenylene ester or a polyalkylene phenylene ester ether, and a process for preparing the same. The resin composition has excellent moldability and the molded articles made therefrom have superior chemical resistance, thermal stability and mechanical properties.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: October 4, 1977
    Assignee: Unitika Ltd.
    Inventors: Nakaba Asahara, Yasuhiko Asai, Kenji Yasue