Patents by Inventor Donald T. Mah

Donald T. Mah 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).

  • Multiple user telephone router
    Patent number: 7773579
    Abstract: Systems and methods are disclosed herein to provide telephone communication systems. For example, in accordance with an embodiment of the present invention, a communication system is disclosed having a router capable of supporting multiple telephone handsets and providing their corresponding voice communications over one or more network connections. The router may further support other devices, such as computers, printers, copiers, scanners, and other network-capable devices.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: August 10, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Calvin Y. Liu, Donald T. Mah
  • Single height housing
    Patent number: D523014
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: June 13, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Calvin Y. Liu, Matthew B. McRae, Donald T. Mah
  • Double height housing
    Patent number: D524815
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: July 11, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Matthew B. McRae, Calvin Y. Liu, Donald T. Mah
  • Gateway housing
    Patent number: D529903
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: October 10, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Matthew B. McRae, Calvin Y. Liu, Donald T. Mah
  • Single height gateway housing
    Patent number: D536333
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: February 6, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Matthew B. McRae, Calvin Y. Liu, Donald T. Mah
  • Double height gateway housing
    Patent number: D536696
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: February 13, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Matthew B. McRae, Calvin Y. Liu, Donald T. Mah