Patents by Inventor Hajime Hirose

Hajime Hirose 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).

  • Polyimide precursor solution, method for producing porous polyimide film, and porous polyimide film
    Patent number: 11958939
    Abstract: A polyimide precursor solution contains: an aqueous solvent containing water; particles; and a polyimide precursor, wherein the polyimide precursor has a high molecular weight region A containing a high molecular weight side maximum value and a low molecular weight region B containing a low molecular weight side maximum value in an elution curve obtained by gel permeation chromatography, a weight average molecular weight in the high molecular weight region A is 50,000 or more, a weight average molecular weight in the low molecular weight region B is 10,000 or more and 30,000 or less, and a value of a/(a+b) is 0.60 or more and 0.98 or less in which a represents an area of the high molecular weight region A and b represents an area of the low molecular weight region B.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: April 16, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kosuke Nakada, Shigeru Seitoku, Takeshi Iwanaga, Tomoyo Okubo, Hajime Sugahara, Hidekazu Hirose
  • Noncontact surface shape measuring method and apparatus thereof
    Patent number: 8570532
    Abstract: Even if a return beam from a work to be measured does not agree with the center of a two-piece sensor, a correction value is calculated according to a voltage difference between two sensors of the two-piece sensor if the voltage difference is within a neighborhood range. The correction value is added to an actual position of an objective lens in an up-down direction, to calculate a movement amount of the objective lens up to a focused state (a state in which the return beam agrees with the center of the two-piece sensor).
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: October 29, 2013
    Assignee: Mitaka Kohki Co., Ltd.
    Inventors: Katsuhiro Miura, Hajime Hirose, Hideo Kotajima, Takao Tsukamoto, Minoru Ishima
  • NONCONTACT SURFACE SHAPE MEASURING METHOD AND APPARATUS THEREOF
    Publication number: 20110279826
    Abstract: Even if a return beam from a work to be measured does not agree with the center of a two-piece sensor, a correction value is calculated according to a voltage difference between two sensors of the two-piece sensor if the voltage difference is within a neighborhood range. The correction value is added to an actual position of an objective lens in an up-down direction, to calculate a movement amount of the objective lens up to a focused state (a state in which the return beam agrees with the center of the two-piece sensor).
    Type: Application
    Filed: January 28, 2010
    Publication date: November 17, 2011
    Applicant: MITAKA KOHKI CO., LTD.
    Inventors: Katsuhiro Miura, Hajime Hirose, Hideo Kotajima, Takao Tsukamoto, Minoru Ishima
  • Paper feeding device for printers
    Patent number: 4887922
    Abstract: A paper feeding device for a printer provides presser rollers which are located on a normal line drawn from center of a platen to a tangential line drawn from circumference of a sprocket wheel to a platen circumference. Thus, papers are stiffened and stable paper feeding is maintained.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: December 19, 1989
    Assignee: Tokyo Juki Industrial Co., Ltd.
    Inventors: Atsushi Satake, Hajime Hirose