Patents by Inventor Sanpei Iida

Sanpei Iida 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).

  • Organic electroluminescent device comprising a prism structure
    Patent number: 7800301
    Abstract: Disclosed is an organic electroluminescent device comprising a first electrode, a second electrode, at least one organic layer containing a luminescent layer and disposed between the first electrode and the second electrode, a transparent substrate and a prism structure disposed between the first electrode or the second electrode and the transparent substrate, wherein the prism structure is disposed such that the apexes of the prisms face the transparent substrate side and the coefficient of variation in the pitch of the apexes of the prisms is 1% or more.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: September 21, 2010
    Assignee: Fujifilm Corporation
    Inventors: Shun-ichi Ishikawa, Yoshitaka Kitamura, Sanpei Iida, Takayuki Fujiwara
  • Organic electroluminescent device
    Publication number: 20060049749
    Abstract: Disclosed is an organic electroluminescent device comprising a first electrode, a second electrode, at least one organic layer containing a luminescent layer and disposed between the first electrode and the second electrode, a transparent substrate and a prism structure disposed between the first electrode or the second electrode and the transparent substrate, wherein the prism structure is disposed such that the apexes of the prisms face the transparent substrate side and the coefficient of variation in the pitch of the apexes of the prisms is 1% or more.
    Type: Application
    Filed: September 2, 2005
    Publication date: March 9, 2006
    Inventors: Shun-ichi Ishikawa, Yoshitaka Kitamura, Sanpei Iida, Takayuki Fujiwara
  • Method of and apparatus for shaping film cartridge
    Patent number: 5172470
    Abstract: When shaping a film cartridge having a hollow cylindrical shell and caps mounted on ends of the shell, a shell plate is brought into abutment with a mandrel having a perfectly circular cross section and bent around the mandrel by a bending roller. A cap is mounted on an end of the hollow cylindrical shell while it is on the mandrel, and the cap is clinched to the hollow shell while the cap and the hollow shell are grasped from the outside.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: December 22, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Haruo Ichikawa, Sanpei Iida, Koichi Takahashi
  • Film cartridge producing method
    Patent number: 5159747
    Abstract: When shaping a film cartridge having a hollow cylindrical shell and caps mounted on ends of the shell, a shell plate is brought into abutment with a mandrel having a perfectly circular cross section and bent around the mandrel by a bending roller. A cap is mounted on an end of the hollow cylindrical shell while it is on the mandrel, and the cap is clinched to the hollow shell while the cap and the hollow shell are grasped from the outside.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: November 3, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Haruo Ichikawa, Sanpei Iida, Koichi Takahashi