Patents by Inventor Michael T. Tzivanis

Michael T. Tzivanis 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: 8012044
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 55 or less, and more preferably 50 or less. In a particularly preferred form of the invention, the outer cover comprises one or more polyurethane materials. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less, and particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: September 6, 2011
    Assignee: Callaway Golf Company
    Inventors: Thomas J. Kennedy, III, Michael T. Tzivanis, Viktor Keller, William M. Risen, Jr., Mark L. Binette, John L. Nealon
  • Publication number: 20100160077
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 55 or less, and more preferably 50 or less. In a particularly preferred form of the invention, the outer cover comprises one or more polyurethane materials. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less, and particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
    Type: Application
    Filed: March 1, 2010
    Publication date: June 24, 2010
    Applicant: CALLAWAY GOLF COMPANY
    Inventors: THOMAS J. KENNEDY, III, MICHAEL T. TZIVANIS, VIKTOR KELLER, WILLIAM M. RISEN, JR., MARK L. BINETTE, JOHN L. NEALON
  • Patent number: 7674191
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 55 or less, and more preferably 50 or less. In a particularly preferred form of the invention, the outer cover comprises one or more polyurethane materials. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less, and particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: March 9, 2010
    Assignee: Callaway Golf Company
    Inventors: Thomas J. Kennedy, III, Michael T. Tzivanis, Viktor Keller, William M. Risen, Jr., Mark L. Binette, John L. Nealon