Patents by Inventor Kaoru Nanba

Kaoru Nanba 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).

  • Modular jack with loop testing switch
    Patent number: 4937464
    Abstract: A modular jack has a switch located between the jack's contacts and its screw terminals. The switch permits (1) simultaneous loop testing from both sides, (2) loop testing from one side while the other side is disconnected, and (3) normal communications. The modular jack is recommended for use between a PBX and computer equipment.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: June 26, 1990
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Kaoru Nanba, Masao Nakamura, Yoshihiro Nakamura