Patents by Inventor Toyohiko Hiyoshi

Toyohiko Hiyoshi 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).

  • Polishing method with error correction
    Patent number: 5157878
    Abstract: A polishing apparatus for polishing optical components and mechanical parts requiring a high surface precision, such as lenses and mirrors, by pressing a running tape to such component.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: October 27, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toyohiko Hiyoshi, Mikio Iwata, Kazuo Watanabe, Shinkichi Ohkawa, Masanori Suzuki
  • Polishing apparatus
    Patent number: 4993190
    Abstract: A polishing apparatus for polishing optical components and mechanical parts requiring a high surface precision, such as lenses and mirrors, by pressing a running tape to such component.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: February 19, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toyohiko Hiyoshi, Mikio Iwata, Kazuo Watanabe, Shinkichi Ohkawa, Masanori Suzuki