Patents by Inventor Masahito Takada

Masahito Takada 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: 7182981
    Abstract: To provide a cellulose ester film formed by casting, which minimizes degradation of optical properties as well as exhibits sufficient mechanical strength generated by the enhancement of tear strength, and further to provide a production method of the same. A cellulose ester film characterized in comprising flat particles.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: February 27, 2007
    Assignee: Konica Corporation
    Inventors: Noriki Tachibana, Masahito Takada, Yasuo Shimura, Tadahiro Nagasawa
  • Patent number: 7070719
    Abstract: A film employed in a liquid crystal display member is disclosed. The film has film thickness of 20 to 60 ?m and variation in the film thickness within ±3.0 percent of the standard film thickness.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: July 4, 2006
    Assignee: Konica Corporation
    Inventors: Noriki Tachibana, Kunio Shimizu, Masahito Takada, Isamu Michihata, Koichi Nagayasu
  • Publication number: 20050238820
    Abstract: A film employed in a liquid crystal display member is disclosed. The film has film thickness of 20 to 60 ?m and variation in the film thickness within ±3.0 percent of the standard film thickness.
    Type: Application
    Filed: June 23, 2005
    Publication date: October 27, 2005
    Inventors: Noriki Tachibana, Kunio Shimizu, Masahito Takada, Isamu Michihata, Koichi Nagayasu
  • Patent number: 6828006
    Abstract: A film for a liquid crystal display. The film is a cellulose ester film with a thickness between 20 and 65 &mgr;m and containing fine particles. The average diameter of fine particles is 0.05 to 3.0 &mgr;m. The number of fine particles per 1,000 &mgr;m2 is 5 to 500 in the cross-section perpendicular to the cellulose ester film in a region of a depth of not more than 10 &mgr;m.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: December 7, 2004
    Assignee: Konica Corporation
    Inventors: Masahito Takada, Isamu Michihata, Kouichi Saito, Hiroko Yokouchi, Noriki Tachibana
  • Publication number: 20040174474
    Abstract: A film employed in a liquid crystal display member is disclosed. The film has film thickness of 20 to 60 &mgr;m and variation in the film thickness within ±3.0 percent of the standard film thickness.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 9, 2004
    Applicant: KONICA CORPORATION
    Inventors: Noriki Tachibana, Kunio Shimizu, Masahito Takada, Isamu Michihata, Koichi Nagayasu
  • Patent number: 6731357
    Abstract: A film employed in a liquid crystal display member is disclosed. The film has film thickness of 20 to 60 &mgr;m and variation in the film thickness within ±3.0 percent of the standard film thickness.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: May 4, 2004
    Assignee: Konica Corporation
    Inventors: Noriki Tachibana, Kunio Shimizu, Masahito Takada, Isamu Michihata, Koichi Nagayasu
  • Publication number: 20040058180
    Abstract: A film for a liquid crystal display. The film is a cellulose ester film with a thickness between 20 and 65 &mgr;m and containing fine particles. The average diameter of fine particles is 0.05 to 3.0 &mgr;m. The number of fine particles per 1,000 &mgr;m2 is 5 to 500 in the cross-section perpendicular to the cellulose ester film in a region of a depth of not more than 10 &mgr;m.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 25, 2004
    Applicant: KONICA CORPORATION
    Inventors: Masahito Takada, Isamu Michihata, Kouichi Saito, Hiroko Yokouchi, Noriki Tachibaba
  • Patent number: 6652926
    Abstract: A film for a liquid crystal display. The film is a cellulose ester film with a thickness between 20 and 65 &mgr;m and containing fine particles. The average diameter of fine particles is 0.005 to 3.0 &mgr;m. The number of fine particles per 1,000 &mgr;m2 is 5 to 500 in the cross-section perpendicular to the cellulose ester film in a region of a depth of not more than 10 &mgr;m.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: November 25, 2003
    Assignee: Konica Corporation
    Inventors: Masahito Takada, Isamu Michihata, Kouichi Saito, Hiroko Yokouchi, Noriki Tachibana
  • Patent number: 6320042
    Abstract: A cellulose triacetate film characterized in being comprised of cellulose triacetate which is prepared by employing cotton liter as the raw material, having a value of weight average molecular weight Mw/number average molecular weight Mn of 3.5 to 4.5, or being comprised of cellulose triacetate which is prepared by employing wood pulp as the raw material, having a value of weight average molecular weight Mw/number average molecular weight Mn of 4.0 to 5.0.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: November 20, 2001
    Assignee: Konica Corporation
    Inventors: Isamu Michihata, Masahito Takada, Kunio Shimizu, Koichi Nagayasu, Noriki Tachibana
  • Patent number: 6197487
    Abstract: A support of photographic material is disclosed. The support is composed of plastic film in which polyethylene naphthalate is the major component. The plastic film is thermally treated at a temperature of not less than its Tg of said film to no more than its Tg plus 55° C.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: March 6, 2001
    Assignee: Konica Corporation
    Inventors: Kenji Ohnuma, Masahito Takada, Hidetoshi Ezure, Yasuo Kurachi
  • Patent number: 6132951
    Abstract: Provided is a photographic support which is excellent in mechanical strength and is less liable to get into roll set curl and which is excellent in cutting property and flatness, and a photographic material using the same. The support for photographic material comprises a polyester film, wherein the polyester film comprises two kinds of polyester resins, each has intrinsic viscosity of 0.2-1.2, and a difference in the intrinsic viscosity between the polyester resins is 0.1-1.0.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: October 17, 2000
    Assignee: Konica Corporation
    Inventors: Hidetoshi Ezure, Masahito Takada, Kenji Ohnuma, Yasuo Kurachi
  • Patent number: 5453349
    Abstract: A package of photographic light-sensitive film is disclosed. The package comprises a cartridge enclosing a spool and a stripe of a photographic light-sensitive film rolled up on said spool, in which the cross sectional area of the cartridge is not larger than 370 mm.sup.2, and the cross sectional area of the spool is not larger than 95 mm.sup.2. The free space ratio V in the cartridge calculated by the following equations is not more than 0.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: September 26, 1995
    Assignee: Konica Corporation
    Inventors: Masahito Takada, Takatoshi Yajima, Hideyuki Kobayashi
  • Patent number: 5453351
    Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support comprising a substrate and an electron beam-cured resin layer provided on a surface of the substrate, and a hydrophilic colloid layer provided on said resin layer. The resin layer comprises an electron beam-curable composition cured by electron beam radiation and a white pigment in an amount of 20% to 70% by weight. The hydrophilic colloid layer includes at least one silver halide emulsion layer and optionally a non-light-sensitive hydrophilic colloid layer, and contains gelatin and an oil component. In the light-sensitive material, the curling degree of the support R m.sup.-1, the coating amount of the gelatin G g/m.sup.2, and the coating amount of the oil component Oi g/m.sup.2 are each -8.ltoreq.R.ltoreq.-1, 2.ltoreq.G.ltoreq.20 and 0.ltoreq.Oi.ltoreq.20, respectively, and a value Y calculated by the following equation is -3.ltoreq.Y.ltoreq.5;Y=0.9G-0.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: September 26, 1995
    Assignee: Konica Corporation
    Inventors: Eiichi Ueda, Masahito Takada
  • Patent number: 5360708
    Abstract: A silver halide photographic light-sensitive material comprises a polyester film support having curling in the lateral direction, a first side of the support being curled outwardly and a second side of the support being curled inwardly, a silver halide emulsion layer provided on the first side of the support, and a backing layer provided on the second side of the support, the ratio of the total gelatin content per unit area of the backing layer to that of the silver halide emulsion layer being within the range of from 0.05 to 0.7.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: November 1, 1994
    Assignee: Konica Corporation
    Inventors: Masahito Takada, Eiichi Ueda, Hiromitsu Araki, Toru Kobayashi
  • Patent number: 5209985
    Abstract: An antistatic plastic film is disclosed. The film comprises a plastic base film and provided thereon a layer containing a polyvinylidene chloride and an antistatic layer containing an ionic polymeric compound in that order.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: May 11, 1993
    Assignee: Konica Corporation
    Inventors: Eiichi Ueda, Masahito Takada