Patents by Inventor Arifumi Tomikawa

Arifumi Tomikawa 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).

  • Double lock male/female type connector
    Patent number: 5445534
    Abstract: In order to securely lock a male component in a female housing, a slidable member is provided on the male component and can be slid into a position wherein flexible arms on which a lock pawl or pawls are provided cannot flex to the degree that the pawls can disengage from the female housing. To reduce the overall height of the female housing, a rib is provided which extends into the mouth of the female housing and which is receivable in a slot formed in the leading edge of the male component. To shut out electromagnetic noise, metallic cover members are formed on the female housing and male component and arranged to electrically contact one another when the male component is inserted into the female housing. The metallic cover on the female housing is grounded.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: August 29, 1995
    Assignee: Oki Densen Kabushiki Kaisha
    Inventors: Hironori Ishizuka, Wataru Maruoka, Arifumi Tomikawa
  • Brief case with a portable wireless telephone
    Patent number: 4840258
    Abstract: A brief case for containing a portable wireless telephone set and other items, comprises a base having a first space for accommodating the telephone set and a second space for accommodating the other items, and a lid assembly capable of being partially opened to permit access to and of the telephone set while preventing display of the other items.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: June 20, 1989
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Arifumi Tomikawa, Nihiko Yasukawa
  • Brief case with a portable wireless telephone
    Patent number: 4790417
    Abstract: A brief case for containing a portable wireless telephone set and other items, comprises a base having a first space for accommodating the telephone set and a second space for accommodating the other items, and a lid assembly capable of being partially opened to permit access to and of the telephone set while preventing display of the other items.
    Type: Grant
    Filed: July 10, 1987
    Date of Patent: December 13, 1988
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Arifumi Tomikawa, Nihiko Yasukawa
  • Electrical connector
    Patent number: D328890
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: August 25, 1992
    Assignee: Oki Densen Kabushiki Kaisha
    Inventors: Arifumi Tomikawa, Hironori Ishizuka, Wataru Maruoka
  • Vehicle power adapter with voltage dropper
    Patent number: D362657
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: September 26, 1995
    Assignee: Oki Electric Cable Co., Ltd.
    Inventors: Arifumi Tomikawa, Eiichi Ikeda, Masanobu Nakamura