Patents by Inventor Yasumasa Okada

Yasumasa Okada 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).

  • Patent number: 6808811
    Abstract: The polarizing plate protection film of the present invention has excellent adhesion with the polarizer because of the polyurethane resin layer formed on the thermoplastic saturated norbornene-type resin film. In addition, blocking of the protection film can be prevented by the PVA layer formed on the polyurethane resin layer. The polarizing plate using the protection film of the present invention is excellent in terms of durability under high temperature and high humidity conditions, and it is suitably used for liquid crystal displays and such.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: October 26, 2004
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Takahiko Sawada, Yasumasa Okada, Hitoshi Kobayashi
  • Patent number: 6552145
    Abstract: A polarizer protection film for protecting a polarizer used in a liquid crystal display is obtained by using a film obtained by melt film formation of a norbornene resin having a glass transition temperature Tg of 135° C. to 180° C., and an inherent viscosity (&eegr;inh) of 0.4 or more, measured at 30° C., in chloroform, wherein the Tg and &eegr;inh are within the range indicated by the following equation (2): 45&eegr;inh≦58.5−0.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: April 22, 2003
    Assignees: Sekisui Chemical Co., LTD, JSR Corporation
    Inventors: Yasumasa Okada, Hitoshi Kobayashi, Shoji Nozato, Takahiko Sawada, Kazuaki Hiratani, Toshihiro Otsuki
  • Publication number: 20030063237
    Abstract: A polarizer protection film for protecting a polarizer used in a liquid crystal display is obtained by using a film obtained by melt film formation of a norbornene resin having a glass transition temperature Tg of 135° C. to 180° C., and an inherent viscosity (&eegr;inh) of 0.4 or more, measured at 30° C.
    Type: Application
    Filed: July 31, 2002
    Publication date: April 3, 2003
    Applicant: Sekisui Chemical Co., Ltd.
    Inventors: Yasumasa Okada, Hitoshi Kobayashi, Shoji Nozato, Takahiko Sawada, Kazuaki Hiratani, Toshihiro Otsuki
  • Publication number: 20030031848
    Abstract: An optical film made via melt extrusion of a noncrystalline thermoplastic resin and having a thickness of below 100 &mgr;m, a residual phase difference of up to 10 nm and an optical axis deviation within ±10°, and a method for manufacture of an optical film wherein, when a nocrystalline thermoplastic resin having a glass transition temperature Tg is extruded from an extrusion die into a film and bringing the film into close contact with a chill roll, a temperature of the film before the film from the die exit is brought into close contact with the chill roll is maintained not to fall below Tg+50° C.
    Type: Application
    Filed: August 9, 2002
    Publication date: February 13, 2003
    Inventors: Takahiko Sawada, Kentaro Ogino, Katsumi Nishimura, Yasumasa Okada, Hironori Tabata, Shoji Nozato, Hitoshi Kobayashi
  • Patent number: 4419789
    Abstract: A vehicle trunk lid opening mechanism including a lid pivotally mounted to the trunk, and two torsion bars which are arranged to produce, when the lid is closed, a torsional force to urge the lid to open. One end of each torsion bar is connected to the lid hinge and the other end of each bar is retained in a mounting hole formed in a panel of a body pillar located in the trunk.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: December 13, 1983
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tatsuhiko Matsui, Yasumasa Okada, Minoru Shimatsu
  • Patent number: 4346925
    Abstract: In a lid opener mechanism including two locking devices for respectively locking two lids, and two control wires respectively connected at their one ends to the two locking devices for making the locking devices inoperative when pulled in a given direction, there is provided a handle device for operating the control wires.
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: August 31, 1982
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Yasumasa Okada
  • Patent number: 4045064
    Abstract: A latch mechanism is provided which comprises a latch member and an open member to move the latch member to its open position. The latch mechanism has a frist condition in which the latch and open members are in conjoint action and a second condition in which the latch and open members are out of conjoint action.
    Type: Grant
    Filed: January 13, 1976
    Date of Patent: August 30, 1977
    Assignee: Nissan Motor Company, Limited
    Inventor: Yasumasa Okada