Patents by Inventor Masaharu Terayama

Masaharu Terayama 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).

  • Cellulose acylate solution for film products
    Patent number: 7005427
    Abstract: A cellulose acylate solution is used for producing a film in a solution casting method. Particles to be added to the cellulose acylate solution are silicon dioxide and surfaces of the particles are positively charged. After the particles are added to the solution, the filtrated solution is used for the film production. Thus the aggregation is prevented, and after the filtration pressure increases, the particles of large size are not contained in the filtrated solution. The obtained film contains a small amount of foreign materials and the situation of the film surface is good.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: February 28, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Ito, Masaharu Terayama
  • Cellulose acylate solution for film products
    Publication number: 20040244647
    Abstract: A cellulose acylate solution is used for producing a film in a solution casting method. Particles to be added to the cellulose acylate solution are silicon dioxide and surfaces of the particles are positively charged. After the particles are added to the solution, the filtrated solution is used for the film production. Thus the aggregation is prevented, and after the filtration pressure increases, the particles of large size are not contained in the filtrated solution. The obtained film contains a small amount of foreign materials and the situation of the film surface is good.
    Type: Application
    Filed: June 2, 2004
    Publication date: December 9, 2004
    Inventors: Takashi Ito, Masaharu Terayama