Patents by Inventor Masahiro Higashigawa

Masahiro Higashigawa 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).

  • Colored fluorescent lamp assembly
    Patent number: 4665341
    Abstract: A colored fluorescent lamp assembly wherein a plurality of lamp tubes each coated on the inner surface with each of different coloring fluorescent substances and gas-tightly closed at one end having an electrode communicate their interior at the other open end with the interior of a gas-tight cell having a common electrode, and a single lighting control means controllably causes discharge lightings between the common electrode and the respective electrodes in the lamp tubes, for variably colored light emissions with a compact outline.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: May 12, 1987
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hiroshi Imamura, Katsumasa Nakai, Masahiro Higashigawa, Makoto Toho