Patents by Inventor Tomohiro Ichikawa

Tomohiro Ichikawa 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).

  • Magnetic tape cassette
    Patent number: 6607156
    Abstract: A 2 reel type data storage magnetic tape cassette (20) is provided with reels (28, 30) around which a magnetic recording medium (26) is wound. The magnetic recording medium (26) includes a support, a non-magnetic layer comprising a non-magnetic powder and a binder on one surface of the support, a magnetic layer comprising a ferromagnetic metal powder and a binder on top of the non-magnetic layer, and a back layer comprising a carbon black powder and a binder on the other side of the support. The magnetic tape cassette (20) is further provided with a rotating guide roller (36) made of a resin within the cassette (20). The rotating guide roller (36) has a ten-point average roughness Rz of 3.0 to 4.5 &mgr;m and is in contact with the surface of the magnetic layer having a center plane average roughness SRa of 2.0 to 3.5 nm.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: August 19, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Murao, Hiroaki Araki, Tomohiro Ichikawa
  • Magnetic tape cassette
    Publication number: 20030062438
    Abstract: A 2 reel type data storage magnetic tape cassette (20) is provided with reels (28, 30) around which a magnetic recording medium (26) is wound. The magnetic recording medium (26) includes a support, a non-magnetic layer comprising a non-magnetic powder and a binder on one surface of the support, a magnetic layer comprising a ferromagnetic metal powder and a binder on top of the non-magnetic layer, and a back layer comprising a carbon black powder and a binder on the other side of the support. The magnetic tape cassette (20) is further provided with a rotating guide roller (36) made of a resin within the cassette (20). The rotating guide roller (36) has a ten-point average roughness Rz of 3.0 to 4.5 &mgr;m and is in contact with the surface of the magnetic layer having a center plane average roughness SRa of 2.0 to 3.5 nm.
    Type: Application
    Filed: April 18, 2002
    Publication date: April 3, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Naoto Murao, Hiroaki Araki, Tomohiro Ichikawa
  • Method and apparatus of assembling vehicular body
    Publication number: 20030057256
    Abstract: A method of assembling a vehicular body includes the following operations:
    Type: Application
    Filed: September 10, 2002
    Publication date: March 27, 2003
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Setsuo Nakamura, Takeshi Yanagisawa, Kimihiro Nishimura, Tomohiro Ichikawa