Patents by Inventor Makoto Nakaichi

Makoto Nakaichi 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).

  • Method of producing retardation film, method of producing circularly polarizing plate, and film-stretching apparatus, involving braking the moving speeds of film-holding clips
    Patent number: 10086556
    Abstract: Provided is a method capable of producing a retardation film having an elongated shape and having a slow axis in an oblique direction with high production efficiency while precisely controlling the direction of the slow axis and the variation of the direction. The method of producing a retardation film of the present invention includes: holding the left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; obliquely stretching the film; and releasing the clips holding the film.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: October 2, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takashi Shimizu, Makoto Nakaichi, Ryuuichi Kira, Satoshi Hirata
  • METHOD OF PRODUCING RETARDATION FILM AND METHOD OF PRODUCING CIRCULARLY POLARIZING PLATE, AND FILM-STRETCHING APPARATUS
    Publication number: 20170066175
    Abstract: Provided is a method capable of producing a retardation film having an elongated shape and having a slow axis in an oblique direction with high production efficiency while precisely controlling the direction of the slow axis and the variation of the direction. The method of producing a retardation film of the present invention includes: holding the left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; obliquely stretching the film; and releasing the clips holding the film.
    Type: Application
    Filed: April 7, 2015
    Publication date: March 9, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takashi Shimizu, Makoto Nakaichi, Ryuuichi Kira, Satoshi Hirata