Patents by Inventor Yasuhiro Kawamura

Yasuhiro Kawamura 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).

  • Three-dimensional video signal generator and three-dimensional video display apparatus
    Patent number: 5786848
    Abstract: A three-dimensional video signal generator has a high-definition video signal source for generating left and right high-definition video signals having, as left and right video signals, video signals in respective effective scanning periods of odd-numbered and even-numbered field signals of a interlaced-scanning high-definition video signal composed of 1125 scanning lines and having an interlace factor of 2:1. The left and right video signals in the respective effective scanning periods of the left and right high-definition video signals supplied from said high-definition video signal source are vertically compressed in time with a compression ratio of 11:5.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: July 28, 1998
    Assignee: Sony Corporation
    Inventors: Toshinobu Isobe, Yasuhiro Kawamura, Hisafumi Yamada, Hidehiko Okada
  • Water-insoluble hydrogel and method for production thereof by using radiation, freezing and thawing
    Patent number: 5106876
    Abstract: A water-isoluble hydrogel, obtained by cross-linking a polyvinyl alcohol by itself, a polyvinyl pyrrolidone by itself, and a polyvinyl alcohol and a polyvinyl pyrrolidone as a pair by exposure to radiation to a cross-linking degree enough for occlusion therein of 50 to 99% by weight of water and they freezing and thawing the product of said cross-linking, production thereof, and an untrasonic transmission medium using the hydrogel.
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: April 21, 1992
    Assignee: Terumo Kabushiki Kaisha
    Inventor: Yasuhiro Kawamura