Patents by Inventor Hideaki Kai

Hideaki Kai 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).

  • Patent number: 8472768
    Abstract: A plastic optical fiber cable that is strong in repeated flexure, ensuring low light loss at bending with a bend radius of 2 mm. The plastic optical fiber cable is one composed of a multicore plastic optical fiber strand including 7 to 10,000 cores of transparent resin, island portions each consisting of at least one core-surrounding sheath layer of transparent resin with a refractive index lower than that of the transparent resin constituting the cores and sea portion of resin surrounding the island portions and, enclosing the multicore plastic optical fiber strand, a coating layer, characterized in that the resin constituting at least either the sheath layer or sea layer is one of 25 to 55 Shore D hardness while the resin constituting the coating layer consists of a thermoplastic resin of 500 to 2000 MP flexural modulus.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: June 25, 2013
    Assignee: Asahi Kasei E-Materials Corporation
    Inventors: Hideaki Kai, Seiji Sasho, Hajime Munekuni
  • Publication number: 20100135622
    Abstract: A plastic optical fiber cable that is strong in repeated flexure, ensuring low light loss at bending with a bend radius of 2 mm. The plastic optical fiber cable is one composed of a multicore plastic optical fiber strand including 7 to 10,000 cores of transparent resin, island portions each consisting of at least one core-surrounding sheath layer of transparent resin with a refractive index lower than that of the transparent resin constituting the cores and sea portion of resin surrounding the island portions and, enclosing the multicore plastic optical fiber strand, a coating layer, characterized in that the resin constituting at least either the sheath layer or sea layer is one of 25 to 55 Shore D hardness while the resin constituting the coating layer consists of a thermoplastic resin of 500 to 2000 MP flexural modulus.
    Type: Application
    Filed: September 19, 2007
    Publication date: June 3, 2010
    Inventors: Seiji Sasho, Hajime Munekuni, Hideaki Kai