Patents by Inventor Takeru Miwa

Takeru Miwa 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 system, optical apparatus, and method of manufacturing optical system
    Patent number: 11971540
    Abstract: An optical system (LS) includes lenses (L22,L23) satisfying the following conditional expressions, ndLZ+(0.01425×?dLZ)<2.12, and ?dLZ<35.0, where ndLZ: a refractive index of the lens with reference to d-line, and ?dLZ: Abbe number of the lens with reference to d-line.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 30, 2024
    Assignee: Nikon Corporation
    Inventors: Masashi Yamashita, Tomoki Ito, Hiroshi Yabumoto, Hiroshi Yamamoto, Satoshi Miwa, Keisuke Tsubonoya, Ayumu Makida, Takeru Uehara
  • Ceramic prosthesis for living body & method of making the same
    Patent number: 4878914
    Abstract: A ceramic prosthesis for the living body wherein a plurality of globular or indefinite-shaped ceramic particles are bonded by sintering into one body directly or indirectly with the surface of a ceramic substrate of alumina ceramics, ziroconia ceramics or the like to permit the ingrowth of bone cells into gaps between the particles of the ceramic particles. The material is very suitable for a prosthesis such as an artifical joint in that the material is enabled to provide stront bonding and fixing thereof to the living bone by permitting early ingrowth of bone cells in the living body and to provide stability of the bonding and fixing over a long period of time.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: November 7, 1989
    Assignee: Kyocera Corporation
    Inventors: Takeru Miwa, Iwao Noda