Patents by Inventor Tokio Fujita

Tokio Fujita 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: 7794307
    Abstract: The present invention provides a method for correcting a semi-conductive belt, the semi-conductive belt including a resin and a conductive substance, the method having grinding a geometrically defective part of the semi-conductive belt to flatten the geometrically defective part.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: September 14, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Tokio Fujita, Toshihiko Tomita
  • Publication number: 20100221042
    Abstract: The present invention provides an endless belt with a meandering preventive guide, which includes an endless belt made of resin, a pressure-sensitive adhesive layer, a meandering preventive guide member attached to the endless belt through the pressure-sensitive adhesive layer, and a primer layer provided on both surfaces of the pressure-sensitive adhesive layer.
    Type: Application
    Filed: September 21, 2006
    Publication date: September 2, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tokio Fujita, Toshihiko Tomita
  • Publication number: 20080166956
    Abstract: The present invention provides a method for correcting a semi-conductive belt, the semi-conductive belt including a resin and a conductive substance, the method having grinding a geometrically defective part of the semi-conductive belt to flatten the geometrically defective part.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 10, 2008
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tokio Fujita, Toshihiko Tomita
  • Publication number: 20070105677
    Abstract: A high-strength polyimide belt, specifically, a fixing belt which, for example, has the given strength, heat resistance, rigidity, and flexibility necessary for conveying a receiving material while pressing and heating unfixed toner images, and which is excellent in functions such as belt lubricity, toner fixability, and toner releasability. The fixing belt comprises a tubular object made of a polyimide resin and at least one functional layer superposed thereon, wherein the tubular object is molded by applying a polyimide precursor to a tubular mold, defoaming the precursor by centrifugal force, and then converting the precursor into an imide. In this belt, the thickness of the tubular polyimide resin object and functional layer or the buckling strength and tear strength of the belt preferably are within respective given ranges.
    Type: Application
    Filed: December 21, 2006
    Publication date: May 10, 2007
    Inventors: Yoshinari Takayama, Tokio Fujita, Tomoyuki Kasagi
  • Patent number: 7052747
    Abstract: The present invention provides a birefringent optical film having a high orientation for easily obtaining a desired retardation value and also a small photoelastic coefficient. The birefringent optical film includes at least two kinds of polymer materials. A total of products of Cn and Wn satisfies a numerical formula (1): ?(Cn×Wn)?20×10?8 cm2/N??(1) where Cn and Wn denote respectively a photoelastic coefficient and a volume fraction of each polymer material, and at least one of the polymer materials of the film has a photoelastic coefficient value of at least 60×10?8 cm2/N, while at least one of the remaining polymer materials has a negative value of photoelastic coefficient.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: May 30, 2006
    Assignee: Nitto Denko Corporation
    Inventors: Yuuichi Nishikouji, Nao Murakami, Tokio Fujita, Hiroyuki Yoshimi
  • Publication number: 20040201805
    Abstract: The present invention provides a birefringent optical film having a high orientation for easily obtaining a desired retardation value and also a small photoelastic coefficient. The birefringent optical film includes at least two kinds of polymer materials.
    Type: Application
    Filed: December 17, 2003
    Publication date: October 14, 2004
    Inventors: Yuuichi Nishikouji, Nao Murakami, Tokio Fujita, Hiroyuki Yoshimi
  • Publication number: 20040180167
    Abstract: A high-strength polyimide belt, specifically, a fixing belt which, for example, has the given strength, heat resistance, rigidity, and flexibility necessary for conveying a receiving material while pressing and heating unfixed toner images, and which is excellent in functions such as belt lubricity, toner fixability, and toner releasability. The fixing belt comprises a tubular object made of a polyimide resin and at least one functional layer superposed thereon, wherein the tubular object is molded by applying a polyimide precursor to a tubular mold, defoaming the precursor by centrifugal force, and then converting the precursor into an imide. In this belt, the thickness of the tubular polyimide resin object and functional layer or the buckling strength and tear strength of the belt preferably are within respective given ranges.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 16, 2004
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshinari Takayama, Tokio Fujita, Tomoyuki Kasagi
  • Patent number: 6751434
    Abstract: An intermediate transfer member, which is used for a tandem color image forming device, is formed in an endless belt shape, and includes a polyimide resin as a main component. The planarity of the intermediate transfer member is less than or equal to 5 mm. Also, a method of fabricating the intermediate transfer member.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: June 15, 2004
    Assignees: Fuji Xerox Co., Ltd., Nitto Denko Corporation
    Inventors: Makoto Kusayanagi, Seiji Ogihara, Toshihiko Tomita, Kiichiro Matsushita, Tokio Fujita
  • Patent number: 6649400
    Abstract: A bacteria strain FERMBP-7046 belonging to the genus Acinetobacter, a strain FERMBP-7049 belonging to the genus Acinetobacter, a strain FERMBP-7047 belonging to the genus Pseudomonas, and a strain FERMBP-7048 belonging to the genus Alcaligenes are caused to act on an object of treatment, either individually or in a bacteria mixture including at least one of the foregoing strains. Thus it is possible to provide heavy oil degrading bacteria and a heavy oil degrading bacteria mixture which are inexpensively prepared, which simplify degradation and removal operations, and which can be stored and shipped simply, and to provide a nurturing composition for such bacteria, a method of degrading heavy oil using such bacteria, and building and civil engineering materials containing a substance obtained by heavy oil degradation treatment.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: November 18, 2003
    Assignee: Technology Licensing Organization Inc.
    Inventor: Tokio Fujita
  • Publication number: 20030036187
    Abstract: A bacteria strain FERMBP-7046 belonging to the genus Acinetobacter, a strain FERMBP-7049 belonging to the genus Acinetobacter, a strain FERMBP-7047 belonging to the genus Pseudomonas, and a strain FERMBP-7048 belonging to the genus Alcaligenes are caused to act on an object of treatment, either individually or in a bacteria mixture including at least one of the foregoing strains. Thus it is possible to provide heavy oil degrading bacteria and a heavy oil degrading bacteria mixture which are inexpensively prepared, which simplify degradation and removal operations, and which can be stored and shipped simply, and to provide a nurturing composition for such bacteria, a method of degrading heavy oil using such bacteria, and building and civil engineering materials containing a substance obtained by heavy oil degradation treatment.
    Type: Application
    Filed: March 3, 2000
    Publication date: February 20, 2003
    Inventor: Tokio Fujita
  • Publication number: 20020141784
    Abstract: An intermediate transfer member, which is used for a tandem color image forming device, is formed in an endless belt shape, and includes a polyimide resin as a main component. The planarity of the intermediate transfer member is less than or equal to 5 mm. Also, a method of fabricating the intermediate transfer member.
    Type: Application
    Filed: October 12, 2001
    Publication date: October 3, 2002
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Makoto Kusayanagi, Seiji Ogihara, Toshihiko Tomita, Kiichiro Matsushita, Tokio Fujita
  • Patent number: 5777405
    Abstract: The present invention provides a damping member constituted of a viscoelastic member and a constraint member, each of which is formed on a brush made of thin metal plate, in a dc minimotor, the viscoelastic member comprising adhesive mass containing a copolymer of alkyl acrylate and acrylic acid. The present invention further provides a brush constituted of the above damping member and a dc minimotor equipped with the brush.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: July 7, 1998
    Assignees: Matsushita Electric Industrial Co., Ltd., Nitto Denko Corporation
    Inventors: Seiji Kurozumi, Yukio Honda, Kazuaki Sato, Masao Nakamura, Nobuharu Suzuki, Tokio Fujita, Hitoshi Matsuoka
  • Patent number: 5411779
    Abstract: The present invention relates to a composite tubular article for use as the fixing belt in an image-forming device such as a copying machine etc., particularly as a fixing belt suited for thermal fixing, and also relates to a process for producing the same.Conventionally known as an image-fixing belt is a belt consisting of a polyimide resin as the inner layer and a fluoroplastic as the outer layer. However, this fixing belt has problems that clear images cannot be obtained because the thickness of each layer is uneven, and that unglossed, so-called matt images cannot be obtained because the belt surface is smooth.This invention provides a composite tubular article comprising a tubular inner layer made of a polyimide resin and a tubular outer layer made of a fluoroplastic, the outer circumferential surface of the fluoroplastic tubular outer layer having a surface roughness of 1 to 10 .mu.m.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: May 2, 1995
    Assignee: Nitto Denko Corporation
    Inventors: Toshio Nakajima, Masayuki Kaneto, Toshihiko Tomita, Tokio Fujita, Hitoshi Ishizaka, Chiaki Harada, Gosei Uemura, Taizo Sasaki, Masao Nakamura, Mamoru Hondo, Tadanori Michimoto, Toshiaki Iwamoto