Patents by Inventor Hiroshi Nakama

Hiroshi Nakama 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).

  • Faceted jewelry ornament with facet grooved for light diffraction
    Patent number: 5612102
    Abstract: The present invention provides an ornament composed of a light transmissive material having a plurality of facets, with a plurality of fine grooves formed on these facets to increase brilliancy, dispersion and scintillation effects and thereby enhance the ornamental appearance.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: March 18, 1997
    Assignee: Yamato Kako Kabushiki Kaisha
    Inventor: Hiroshi Nakama
  • Film forming process
    Patent number: 5405676
    Abstract: A first film having a low adhesion to a base material (substrate) is deposited on a base material. Pores reaching at least the surface of the base material are then formed through the first film at a high pore density (porosity), for example, according to photolithographic etching technology. Thereafter, a second film having a high adhesion to the base material is formed over the porous first film to fix, or secure, the porous first film to the base material. Recesses may be formed in a surface portion of the base material to further improve the fixation of the porous first film to the base material.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: April 11, 1995
    Assignee: Yamato Kako Kabushiki Kaisha
    Inventor: Hiroshi Nakama
  • Film forming process
    Patent number: 5275693
    Abstract: A first film having a low adhesion to a base material (substrate) is deposited on a base material. Pores reaching at least the surface of the base material are then formed through the first film at a high pore density (porosity), for example, according to photolithographic etching technology. Thereafter, a second film having a high adhesion to the base material is formed over the porous first film to fix, or secure, the porous first film to the base material. Recesses may be formed in a surface portion of the base material to further improve the fixation of the porous first film to the base material.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: January 4, 1994
    Assignee: Yamato Kako Kabushiki Kaisha
    Inventor: Hiroshi Nakama
  • Apparatus for dimensional inspection of a pipe spool, or for making or cutting and finishing at its both ends
    Patent number: 4604813
    Abstract: Apparatus used for dimensional inspection of a pipe spool, and further for marking or cutting and finishing of the both ends by means of laying at least an end tangent horizontal and having each center of the cutting end section in a line which is parallel to a base frame.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: August 12, 1986
    Assignee: Dai-Ichi High Frequency Co., Ltd.
    Inventors: Shumpei Kawanami, Hiroshi Nakama