Patents by Inventor Takeharu Sakata

Takeharu Sakata 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).

  • Cordless telephone apparatus
    Patent number: 5530745
    Abstract: In a cordless telephone apparatus including a base unit and a sub unit connected with each other by wireless, the base unit has a memory for storing therein telephone number data which are referred to from the sub unit. When the base unit is busy, the transfer of a calling signal between the sub and base units is not performed. The access from the sub unit to the memory of the base unit is always permitted. The memory includes a callers area in which the telephone numbers of callers of received calls and the reception times of the calls are stored and a directory area in which frequently called telephone numbers and the number of placing calls of the numbers are stored. The telephone numbers in the callers area are retrieved based on the reception times. The telephone numbers in the directory area are retrieved based on the numbers of placing calls.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: June 25, 1996
    Assignees: Sanyo Electric Co., Ltd., Tottori-Ken Sanyo Electric Co., Ltd.
    Inventors: Shinichi Urasaka, Takeharu Sakata
  • Cordless telephone apparatus
    Patent number: 5515420
    Abstract: In a cordless telephone apparatus including a base unit and a sub unit connected with each other by wireless, the base unit has a memory for storing therein telephone number data which are referred to from the sub unit. When the base unit is busy, the transfer of a calling signal between the sub and base units is not performed. The access from the sub unit to the memory of the base unit is always permitted. The memory includes a callers area in which the telephone numbers of callers of received calls and the reception times of the calls are stored and a directory area in which frequently called telephone numbers and the number of placing calls of the numbers are stored. The telephone numbers in the callers area are retrieved based on the reception times. The telephone numbers in the directory area are retrieved based on the numbers of placing calls.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: May 7, 1996
    Assignees: Sanyo Electric Co. Ltd., Tottori Sanyo Electric Co., Ltd.
    Inventors: Shinichi Urasaka, Takeharu Sakata
  • Cordless telephone apparatus
    Patent number: 5467383
    Abstract: In a cordless telephone apparatus including a base unit and a sub unit connected with each other by wireless, the base unit has a memory for storing therein telephone number data which are referred to from the sub unit. When the base unit is busy, the transfer of a calling signal between the sub and base units is not performed. The access from the sub unit to the memory of the base unit is always permitted. The memory includes a callers area in which the telephone numbers of callers of received calls and the reception times of the calls are stored and a directory area in which frequently called telephone numbers and the number of placing calls of the numbers are stored. The telephone numbers in the callers area are retrieved based on the reception times. The telephone numbers in the directory area are retrieved based on the numbers of placing calls.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: November 14, 1995
    Assignees: Sanyo Electric Co., Ltd., Tottori Sanyo Electric Co., Ltd.
    Inventors: Shinichi Urasaka, Takeharu Sakata