Patents by Inventor Hirohisa Yoshikawa

Hirohisa Yoshikawa 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: 9523992
    Abstract: To prevent loss of controllability associated with the change in total target power value, and suppress power supply voltage fluctuation. An upper limit value calculation section 20 is provided, which adds a correction value Hn calculated by a correction value calculation section 19 to a sum total ?xn of target power values x1n to xMn calculated by a total target power value calculation section 18, so as to calculate a power upper limit value PLIM for every load, such that an appropriate power upper limit value PLIM may be obtained depending on variation of the sum total ?xn of target power values x1n to xMn.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: December 20, 2016
    Assignee: RKC INSTRUMENT INC.
    Inventors: Shigefumi Gotoh, Keisuke Akiho, Hirohisa Yoshikawa
  • Publication number: 20150212533
    Abstract: To prevent loss of controllability associated with the change in total target power value, and suppress power supply voltage fluctuation. An upper limit value calculation section 20 is provided, which adds a correction value Hn calculated by a correction value calculation section 19 to a sum total ?xn of target power values x1n to xMn calculated by a total target power value calculation section 18, so as to calculate a power upper limit value PLIM for every load, such that an appropriate power upper limit value PLIM may be obtained depending on variation of the sum total ?xn of target power values x1n to xMn.
    Type: Application
    Filed: September 13, 2012
    Publication date: July 30, 2015
    Applicant: RKC INSTRUMENT INC.
    Inventors: Shigefumi Gotoh, Keisuke Akiho, Hirohisa Yoshikawa
  • Patent number: 6110316
    Abstract: In order to produce a decorative laminate by adhering a transfer printing sheet to the three-dimensional irregular surface of a base, solid particles (P) are caused to collide with the transfer printing sheet (S) from the back surface thereof with the transfer printing sheet (S) facing the irregular surface of the base (B), and the transfer printing sheet (S) is brought into pressure contact with the irregular surface of the base (B) by utilizing the collisional pressure, thereby transferring the transfer printing sheet (S) to the base (B). In the case where a thermally stretchable transfer printing sheet is used, it is better to conduct transfer printing by heating at least one of the base, the transfer printing sheet, the solid particles, and so on.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: August 29, 2000
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Kazuhisa Kobayashi, Mitsutoyo Miyakoshi, Masaru Okamoto, Haruo Miyashita, Hirohisa Yoshikawa, Haruo Ono, Reiko Kan, Kazuo Kitamura, Tutomu Ichihashi
  • Patent number: 6045744
    Abstract: A foil-decorating injection molding method including using a foil-decorating injection molding machine with an injection mold having a male mold and a female mold. The female mold has a cavity surface for forming a cavity, and a parting surface having an outer peripheral section on which to hold a decorative sheet, and an inner peripheral section extending between the inner edge of the outer peripheral section of the parting surface and the edge of the cavity surface in a concavely curved shape to allow the expansion of a peripheral portion of the decorative sheet around a decorating portion of the same during preforming. This reduces local strains in the decorative portion of the sheet and ensures a uniform thickness distribution of the sheet to prevent breaking and creasing of the sheet.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: April 4, 2000
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Kazuhisa Kobayashi, Masayuki Shibata, Hirohisa Yoshikawa
  • Patent number: 6045646
    Abstract: There is provided a transfer sheet for provision of a pattern on a three-dimensional object, comprising: an olefinic thermoplastic elastomer film as a substrate film; and at least a pattern layer as a transfer layer provided on the substrate.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: April 4, 2000
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hirohisa Yoshikawa, Haruo Ono, Reiko Kan
  • Patent number: 5972480
    Abstract: There is provided a transfer sheet for provision of a pattern on a three-dimensional object, comprising: an olefinic thermoplastic elastomer film as a substrate film; and at least a pattern layer as a transfer layer provided on the substrate.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: October 26, 1999
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hirohisa Yoshikawa, Haruo Ono, Reiko Kan
  • Patent number: 5851560
    Abstract: A foil-decorating injection molding machine is provided with an injection mold having a male mold and a female mold. The female mold has a cavity surface for forming a cavity, and a parting surface having an outer peripheral section on which to hold a decorative sheet, and an inner peripheral section extending between the inner edge of the outer peripheral section of the parting surface and the edge of the cavity surface in a concavely curved shape to allow the expansion of a peripheral portion of the decorative sheet around a decorating portion of the same during preforming. This reduces local strains in the decorative portion of the sheet and ensures a uniform thickness distribution of the sheet to prevent breaking and creasing of the sheet.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: December 22, 1998
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Kazuhisa Kobayashi, Masayuki Shibata, Hirohisa Yoshikawa