Patents by Inventor Dan B. Carpenter

Dan B. Carpenter 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).

  • Telephone recycling system
    Patent number: 5796807
    Abstract: A telephone recycling system answers an incoming telephone call placed by a user, prompts the user to enter a ZIP Code via the user's touchtone telephone keys, and provides the user with a recycling voice message that varies according to the ZIP Code entered by the user. The recycling message is provided directly in response to the ZIP Code without the user having to provide additional input.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: August 18, 1998
    Inventors: Matthew W. Costello, Dan B. Carpenter, Gerald V. McNabb