Patents by Inventor Clarence Friend

Clarence Friend 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).

  • Patent number: 6091944
    Abstract: An on demand, real time billing equipment for a user of a radio telephone employs a telephone switching platform, including an unintelligent switch and a computer, which is in communication with a radio telephone transmitting system, a local telephone transmitting system, and long distance telephone transmitting system. The computer is programed to monitor, control and rate telephone calls made by said customer to tally for each separate customer the identification of each individual phone number called, the date of each individual phone number called, duration of each individual phone number called, and the cost of each individual call and provide detail billing information on demand in real time. For rented radio telephones, an access terminal is in communication with the credit authorization center at which the identification of the customer is entered.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: July 18, 2000
    Assignee: Cellular Development System
    Inventor: Clarence Friend
  • Patent number: 5692037
    Abstract: An on demand, real time billing equipment for a user of a radio telephone employs a telephone switching platform, including an unintelligent switch and a computer, which is in communication with a radio telephone transmitting system, a local telephone transmitting system, and long distance telephone transmitting system. The computer is programed to monitor, control and rate telephone calls made by customer to tally for each separate customer the identification of each individual phone number called, the date of each individual phone number called, duration of each individual phone number called, and the cost of each individual call and provide detail billing information on demand in real time. For rented radio telephones, an access terminal is in communication with the credit authorization center at which the identification of the customer is entered.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: November 25, 1997
    Assignee: Cellular Development Systems
    Inventor: Clarence Friend