Patents by Inventor Minoru Mayama

Minoru Mayama 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).

  • Stretch-formed sheet of ultra-high molecular weight polyolefin having excellent transparency and mechanical properties, and production method thereof
    Patent number: 8304064
    Abstract: To provide a stretch-formed sheet of ultra-high molecular weight polyolefin having excellent transparency and mechanical properties, while being relatively thick. A stretch-formed sheet of ultra-high molecular weight polyolefin having a thickness of 0.2 mm or greater and having an internal haze of 70% or less in the direction of the thickness, is prepared by stretching at least in one direction a formed article of ultra-high molecular weight olefin having a density of 925 kg/m3 or less and containing a polymer of ultra-high molecular weight polyolefin having an intrinsic viscosity of 7 dl/g or greater as measured in a 135° C. decalin solution, at a temperature of less than the melting point (Tm) of the ultra-high molecular weight polyolefin and at ordinary temperature or higher.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: November 6, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Hidenobu Takeyama, Minoru Mayama
  • Stretch-formed sheet of ultra-high molecular weight polyolefin having excellent transparency and mechanical properties, and production method thereof
    Publication number: 20090324920
    Abstract: To provide a stretch-formed sheet of ultra-high molecular weight polyolefin having excellent transparency and mechanical properties, while being relatively thick. A stretch-formed sheet of ultra-high molecular weight polyolefin having a thickness of 0.2 mm or greater and having an internal haze of 70% or less in the direction of the thickness, is prepared by stretching at least in one direction a formed article of ultra-high molecular weight olefin having a density of 925 kg/m3 or less and containing a polymer of ultra-high molecular weight polyolefin having an intrinsic viscosity of 7 dl/g or greater as measured in a 135° C. decalin solution, at a temperature of less than the melting point (Tm) of the ultra-high molecular weight polyolefin and at ordinary temperature or higher.
    Type: Application
    Filed: June 26, 2007
    Publication date: December 31, 2009
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Hidenobu Takeyama, Minoru Mayama