Patents by Inventor Lawrence H. Hobbs

Lawrence H. Hobbs 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).

  • Thermal printers
    Patent number: 4232212
    Abstract: Any element of a thermal print bar of resistive material is heated by a current pulse passed across the bar between an appropriate conductor pairing. Certain conductors are deposited in two parts with a rectifying layer deposited between the parts to provide diode isolation of heating paths from one another.
    Type: Grant
    Filed: October 3, 1978
    Date of Patent: November 4, 1980
    Assignee: Northern Telecom Limited
    Inventors: David R. Baraff, Lawrence H. Hobbs