Patents by Inventor Takehiko Tsutsumi

Takehiko Tsutsumi 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).

  • Publication number: 20040220995
    Abstract: An inexpensive network service without time constraints is provided to an information terminal through delegation thereof.
    Type: Application
    Filed: June 8, 2004
    Publication date: November 4, 2004
    Inventor: Takehiko Tsutsumi
  • Patent number: 6301306
    Abstract: A system for generating a short-range wireless data communication link through an over-the-air channel on a predetermined radio frequency (RF) carrier. The system integrates conventional RF techniques into a low-power and low-cost system for establishing short-range wireless data communication. The system generates short-range wireless data communication links between a transmitting unit (500) that transmits an operating signal carrying data, and a receiver unit (1000) that receives the operating signal without a synthesizer or a heterodyne scheme.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: October 9, 2001
    Assignee: Motorola, Inc.
    Inventors: James A. McDonald, Takehiko Tsutsumi, William J. Wilson, Anders A. Eklof
  • Patent number: 4796024
    Abstract: A selective calling receiver with automatic memory storage and turn-on indication is disclosed. When the receiver is placed in the called state by an incoming signal, audible and/or visual indicator signals actuated by the incoming signal are automatically stopped after a predetermined period of time has elapsed and record of the called state is simultaneously kept in a memory integral to the receiver. Indication of the called state is regenerable at a later time by a switching operation. Indication of the called state is stoppable without recording such indication in memory when a manual reset operation is performed before indication of the called state is automatically stopped.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: January 3, 1989
    Assignee: Nippon Telegraph and Telephone Corporation (et al.)
    Inventors: Kazushige Sakoh, Hiroshi Arakawa, Hiroyuki Yamaguchi, Tatsuaki Sekigawa, Toshiyasu Takasugi, Shinjiro Umetsu, Takehiko Tsutsumi