Patents by Inventor Tsuneyoshi Kamae

Tsuneyoshi Kamae 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).

  • Optical fiber
    Patent number: 5790742
    Abstract: An optical fiber comprises a core 1 extending in a longitudinal direction and a cladding 3 of silica aerogel preferably having a hydrophobic property to provide a high optical transmission efficiency. The silica aerogel of the cladding is prepared by polymerizing a hydrolyzed alkoxysilane before a supercritical drying treatment and is subjected to a hydrophobic treatment before or during the supercritical drying.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: August 4, 1998
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Kenji Tsubaki, Tsuneyoshi Kamae, Hiroshi Yokogawa, Masaru Yokoyama, Kenji Sonoda