Patents by Inventor Kiichi Takamoto

Kiichi Takamoto 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).

  • Mold for microlens and process for producing the same
    Patent number: 8366949
    Abstract: A mold for producing microlenses or a microlens array is produced by sequentially carrying out an etching step of forming quadrangular pyramid concave parts on a single crystal silicon substrate by anisotropic etching and an ion etching step of forming molding concave parts with spherical or cylindrical surface parts from the quadrangular pyramid concave parts.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: February 5, 2013
    Inventor: Kiichi Takamoto
  • MOLD FOR MICROLENS AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20090194666
    Abstract: A mold for producing microlenses or a microlens array is produced by sequentially carrying out an etching step of forming quadrangular pyramid concave parts on a single crystal silicon substrate by anisotropic etching and an ion etching step of forming molding concave parts with spherical or cylindrical surface parts from the quadrangular pyramid concave parts.
    Type: Application
    Filed: August 17, 2006
    Publication date: August 6, 2009
    Inventor: Kiichi Takamoto
  • Aperture structure for charged beam exposure
    Patent number: 4550258
    Abstract: In an aperture for a charged particle beam exposure apparatus, the outside edges of fine wires are located inside the individual sides of an opening formed in a conductive sheet so that an opening smaller than the opening of the conductive sheet is defined by the fine wires.
    Type: Grant
    Filed: July 19, 1983
    Date of Patent: October 29, 1985
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Fujio Omata, Kiichi Takamoto