Patents by Inventor Ryoichi Egasira

Ryoichi Egasira 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).

  • In-house communication system for transmitting and receiving both voice and digital data, and communication terminals used in this system
    Patent number: 5715301
    Abstract: An in-house communication system comprises a PBX and a line switching device 15 electively connected to a telephone 18 or a facsimile equipment 17 in response to a designating signal sent from an intended party designating signal sending device 6 or 42 of the PBX, thereby providing both facsimile and telephone service directly available in each guest room of a hotel without renovating the telephone wiring in the facility.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: February 3, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kimitoshi Terasaki, Ryoichi Egasira, Hiroshi Watanabe, Yuji Hirai