Patents by Inventor Viktor M. Keller

Viktor M. Keller 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).

  • Multi-layer golf ball with reaction injection molded polyurethane component
    Publication number: 20040072629
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has a core, one or more mantle or inner cover layers with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the inner and/or outer cover layers comprise a reaction injection molded polyurethane. 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: November 19, 2003
    Publication date: April 15, 2004
    Applicant: Callaway Golf Company
    Inventors: Viktor M. Keller, Thomas J. Kennedy, William M. Risen, Michael John Tzivanis, Michael J. Sullivan
  • Multi-layer golf ball with reaction injection molded polyurethane component
    Patent number: 6663508
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has a core, one or more mantle or inner cover layers with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the inner and/or outer cover layers comprise a reaction injection molded polyurethane. 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: July 5, 2000
    Date of Patent: December 16, 2003
    Assignee: Callaway Golf Company
    Inventors: Viktor M. Keller, Thomas J. Kennedy, III, William M. Risen, Jr., Michael John Tzivanis, Michael J. Sullivan
  • Multi-layer golf ball
    Patent number: 6520871
    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 53 or less. In a particularly preferred form of the invention, the outer cover comprises at least 75% of a soft, ionomeric copolymer formed from a polyolefin, an unsaturated carboxylic acid, and a monomer of the acrylate ester class. 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: July 5, 2000
    Date of Patent: February 18, 2003
    Assignee: Spalding Sports Worldwide, Inc.
    Inventors: Michael J. Sullivan, Viktor M. Keller, Thomas J. Kennedy, John Neill, William M. Risen, Jr.
  • Multi-layer golf ball
    Patent number: 6287217
    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 53 or less. In a particularly preferred form of the invention, the outer cover comprises at least 75% of a soft, ionomeric copolymer formed from a polyolefin, an unsaturated carboxylic acid, and a monomer of the acrylate ester class. 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: September 1, 1999
    Date of Patent: September 11, 2001
    Assignee: Spalding Sports Worldwide, Inc.
    Inventors: Michael J. Sullivan, Viktor M. Keller, Thomas Kennedy, John Neill, William M. Risen, Jr.