Patents by Inventor Takahisa Deguchi

Takahisa Deguchi 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).

  • Method and apparatus for profile mirror surface grinding
    Patent number: 6149504
    Abstract: (A) Applying a voltage between an electrically conductive grindstone (1) and a shaping electrode (4) for shaping the grindstone, generating a spark on a contact point by contacting the shaping electrode to the grindstone, thereby shaping the grindstone by the spark, and (B) simultaneously applying a voltage between the grindstone and a dressing electrode (2) for dressing the grindstone that is oppositely aligned to the grindstone without contact, supplying the electrically conductive grinding fluid between them, thereby dressing the grindstone by electrolytic dressing. According to these steps, highly efficient and simultaneous processing is achieved to provide a high precision profiling high quality mirror.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: November 21, 2000
    Assignee: The Institute of Physical and Chemical Research
    Inventors: Hitoshi Ohmori, Naoki Arai, Kiyotaka Noguchi, Takahisa Deguchi, Tamotsu Toeda, Hiroyuki Oguma, Hisayoshi Shindo, Yutaka Nagai