Patents by Inventor Kohsuke Ishikawa

Kohsuke Ishikawa 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).

  • Optical connector plug
    Patent number: 8613560
    Abstract: An optical connector plug is comprised of a pair of divided front and rear housings formed generally in a quadrilateral tubular shape for receiving a ferrule to hold an optical fiber. A housing, one of the housings is provided with engagement openings on at least opposite wall portions thereof, and the other housing is provided with engagement projections on its opposite wall portions to be engaged in the engagement openings. Furthermore, fitting projections are formed in the longitudinal direction on the wall portions in which the engagement openings are formed, and fitting recesses to be fitted with the fitting projections are formed in the wall portions on which the engagement projections are formed. The pair of housings are firmly joined to each other by engaging the engagement projections with the engagement openings and by fitting and engaging the fitting projections in the fitting recesses.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: December 24, 2013
    Assignee: Adamant Kogyo Co., Ltd.
    Inventors: Nobuhiko Oda, Isao Yamauchi, Kohsuke Ishikawa
  • OPTICAL CONNECTOR PLUG
    Publication number: 20120020625
    Abstract: An optical connector plug is comprised of a pair of divided front and rear housings formed generally in a quadrilateral tubular shape for receiving a ferrule to hold an optical fiber. A housing, one of the housings is provided with engagement openings on at least opposite wall portions thereof, and the other housing is provided with engagement projections on its opposite wall portions to be engaged in the engagement openings. Furthermore, fitting projections are formed in the longitudinal direction on the wall portions in which the engagement openings are formed, and fitting recesses to be fitted with the fitting projections are formed in the wall portions on which the engagement projections are formed. The pair of housings are firmly joined to each other by engaging the engagement projections with the engagement openings and by fitting and engaging the fitting projections in the fitting recesses.
    Type: Application
    Filed: April 26, 2010
    Publication date: January 26, 2012
    Applicant: ADAMANT KOGYO CO., LTD.
    Inventors: Nobuhiko Oda, Isao Yamauchi, Kohsuke Ishikawa
  • Extender cap for a plug of an optical fiber connector
    Patent number: D651171
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: December 27, 2011
    Assignee: Adamant Kogyo Co., Ltd.
    Inventors: Isao Yamauchi, Nobuhiko Oda, Kohsuke Ishikawa
  • Plug housing for a plug of an optical fiber connector
    Patent number: D651172
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: December 27, 2011
    Assignee: Adamant Kogyo Co., Ltd.
    Inventors: Isao Yamauchi, Nobuhiko Oda, Kohsuke Ishikawa
  • Ferrule for optical fiber connector
    Patent number: D665359
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: August 14, 2012
    Assignee: Adamant Kogyo Co., Ltd.
    Inventors: Isao Yamauchi, Kohsuke Ishikawa