Patents by Inventor Naohide Ogita

Naohide Ogita 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).

  • Cellulose fibers and process for producing the same, cellulose fiber assembly, and cellulose-fiber composite material
    Patent number: 9309385
    Abstract: The present invention relates to cellulose fibers wherein a part of the hydroxyl groups of the cellulose have been substituted with at least one of a carboxy group and formyl group of 0.1 mmol/g or larger based on the weight of the cellulose fibers, and have been further substituted with a chemical modification group other than the carboxy and formyl groups.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: April 12, 2016
    Assignee: Oji Holdings Corporation
    Inventors: Tomokazu Umemoto, Naohide Ogita, Takanori Shimizu, Yasutomo Noishiki, Hiroyuki Nagatani, Go Banzashi
  • Method for producing cellulose-fiber flat structure
    Patent number: 8663426
    Abstract: The present invention relates to a method of producing a cellulose-fiber flat structure, the method including obtaining a cellulose-fiber flat structure by filtering a fine cellulose-fiber dispersion containing fine cellulose fibers having an average fiber diameter of 4 to 100 nm, using a filter material having a water permeability of not more than 100 ml/m2·s and an initial tensile modulus of 20 MPa or greater. The present invention is able to produce a cellulose-fiber flat structure by efficiently recovering fine cellulose fibers from a dispersion containing fine cellulose fibers having an average fiber diameter at the nano level. The method of producing a cellulose-fiber flat structure can also be applied to a continuous process.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: March 4, 2014
    Assignees: Mitsubishi Chemical Corporation, Oji Paper Co., Ltd.
    Inventors: Tsuyoshi Fujiwara, Naohide Ogita, Takashi Kawamukai
  • CELLULOSE FIBERS AND PROCESS FOR PRODUCING THE SAME, CELLULOSE FIBER ASSEMBLY, AND CELLULOSE-FIBER COMPOSITE MATERIAL
    Publication number: 20130338250
    Abstract: The present invention relates to cellulose fibers wherein a part of the hydroxyl groups of the cellulose have been substituted with at least one of a carboxy group and formyl group of 0.1 mmol/g or larger based on the weight of the cellulose fibers, and have been further substituted with a chemical modification group other than the carboxy and formyl groups.
    Type: Application
    Filed: August 21, 2013
    Publication date: December 19, 2013
    Applicants: OJI HOLDINGS CORPORATION, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomokazu UMEMOTO, Naohide Ogita, Takanori Shimizu, Yasutomo Noishiki, Hiroyuki Nagatani, Go Banzashi
  • METHOD FOR PRODUCING CELLULOSE-FIBER FLAT STRUCTURE
    Publication number: 20120298319
    Abstract: The present invention relates to a method of producing a cellulose-fiber flat structure, the method including obtaining a cellulose-fiber flat structure by filtering a fine cellulose-fiber dispersion containing fine cellulose fibers having an average fiber diameter of 4 to 100 nm, using a filter material having a water permeability of not more than 100 ml/m2·s and an initial tensile modulus of 20 MPa or greater. The present invention is able to produce a cellulose-fiber flat structure by efficiently recovering fine cellulose fibers from a dispersion containing fine cellulose fibers having an average fiber diameter at the nano level. The method of producing a cellulose-fiber flat structure can also be applied to a continuous process.
    Type: Application
    Filed: February 1, 2011
    Publication date: November 29, 2012
    Applicants: OJI PAPER CO., LTD., MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tsuyoshi Fujiwara, Naohide Ogita, Takashi Kawamukai
  • Aluminum planographic printing plate with convexly curved corner
    Patent number: 5826512
    Abstract: An aluminum planographic printing plate includes an aluminum support and a hydrophilic layer disposed at least on one surface thereof, wherein a corner defined with a surface having the hydrophilic layer and an end face of the aluminum planographic printing plate is constituted with a convexly curved surface with no bending portion, a portion of the convexly curved surface is covered with the hydrophilic layer, and a vertical distance between an end portion of the hydrophilic layer and the flat surface of the hydrophilic layer is 10 to 60 .mu.m.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: October 27, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kenji Niegawa, Shinichi Bunya, Naohide Ogita