Patents by Inventor Timothy D. Koval

Timothy D. Koval 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).

  • Process for Forming Electrical Contacts on a Semiconductor Wafer Using a Phase Changing Ink
    Publication number: 20090119914
    Abstract: A process for forming electrical contacts or electrical conductors on a surface of a substrate comprising ink jet printing a phase-change electrically conducting or semi-conducting printing ink or, such a phase-change printing ink that becomes electrically conducting or semi-conducting after a post-printing treatment of the applied ink.
    Type: Application
    Filed: December 21, 2006
    Publication date: May 14, 2009
    Inventors: Roger F. Clark, Timothy D. Koval
  • Vapor deposition of H.sub.3 PO.sub.4 and formation of thin phosphorus layer on silicon substrates
    Patent number: 4360393
    Abstract: Provision for a source of phosphorus dopant on a silicon wafer, for the subsequent formation of an electrical p-n junction, by the vapor deposition, at atmospheric pressure, of phosphoric acid to form an essentially continuous film on a silicon wafer, said wafer being at room temperature, and the firing of said film to form a phosphorus oxide-silicate-glass layer which will not interfere with any antireflective layer deposited thereon.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: November 23, 1982
    Assignee: Solarex Corporation
    Inventor: Timothy D. Koval