Patents by Inventor Joseph F. Stiefel

Joseph F. Stiefel 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: 6695721
    Abstract: A spherical ball and a method of making the spherical ball wherein the ball has a plurality of elongated dimples substantially covering the outer surface of the ball without any dimple overlap. The elongated dimples are of at least two types including a first plurality of dimples having a minor axis and a major axis which together form the long axis of the first plurality of dimples. The minor axis being less than the major axis. A second plurality of dimples has a minor axis equal to that of the first plurality of dimples and a major axis less than the major axis of the first plurality of dimples but greater than the minor axis.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: February 24, 2004
    Assignee: Callaway Golf Company
    Inventors: Gary Tavares, Kevin Shannon, Daniel Murphy, Joseph F. Stiefel
  • Patent number: 6315685
    Abstract: A spherical ball and a method of making the spherical ball wherein the ball has a plurality of elongated dimples substantially covering the outer surface of the ball without any dimple overlap. The elongated dimples are of at least two types including a first plurality of dimples having a minor axis and a major axis which together form the long axis of the first plurality of dimples. The minor axis being less than the major axis. A second plurality of dimples has a minor axis equal to that of the first plurality of dimples and a major axis less than the major axis of the first plurality of dimples but greater than the minor axis.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: November 13, 2001
    Assignee: Spalding Sports Worldwide, Inc.
    Inventors: Gary Tavares, Kevin Shannon, Daniel Murphy, Joseph F. Stiefel
  • Patent number: 6206792
    Abstract: A spherical ball and a method of making the spherical ball wherein the ball has a plurality of elongated dimples substantially covering the outer surface of the ball without any dimple overlap. The elongated dimples are of at least two types including a first plurality of dimples having a minor axis and a major axis which together form the long axis of the first plurality of dimples. The minor axis being less than the major axis. A second plurality of dimples has a minor axis equal to that of the first plurality of dimples and a major axis less than the major axis of the first plurality of dimples but greater than the minor axis.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: March 27, 2001
    Assignee: Spalding Sports Worldwide, Inc.
    Inventors: Gary Tavares, Kevin Shannon, Daniel Murphy, Joseph F. Stiefel
  • Patent number: 5890974
    Abstract: A golf ball including two poles and an equator is characterized by the arrangement of a preselected number of dimples in a geometrical lattice configuration based upon a subdivided tetrahedron on the surface thereof The lattice includes six dimple-free great circles around the circumference of the ball, one of the circles corresponding with the equator and another of the circles passing through the poles. All of the circles define twenty-four generally equivalent triangles, twelve in each hemisphere of the ball. An equal number of dimples are arranged within each of the triangles, and the dimple arrangement in at least two of the triangles is different from the dimple arrangement in the remaining triangles.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: April 6, 1999
    Assignee: Lisco, Inc.
    Inventors: Joseph F. Stiefel, Dennis Nesbitt
  • Patent number: 5890975
    Abstract: A spherical ball and a method of making the spherical ball wherein the ball has a plurality of elongated dimples substantially covering the outer surface of the ball without any dimple overlap. The elongated dimples are of at least two types including a first plurality of dimples having a minor axis and a major axis which together form the long axis of the first plurality of dimples the minor axis being less than the major axis. A second plurality of dimples has a minor axis equal to that of the first plurality of dimples and a major axis less than the major axis of the first plurality of dimples but greater than the minor axis.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: April 6, 1999
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel
  • Patent number: 5772532
    Abstract: A golf ball having a dimple-free equatorial line dividing the golf ball into two hemispheres;each of the hemispheres has an equal number of dimples;each hemisphere has a plurality of dimples arranged in a configuration about the surface thereof so that there are no repeating patterns within the hemisphere.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: June 30, 1998
    Assignee: Lisco, Inc.
    Inventors: Joseph F. Stiefel, Donald J. Bunger
  • Patent number: 5766098
    Abstract: A two-piece golf ball of improved playing characteristics comprisinga core having a weight of substantially 34.4 grams anda cover having a weight of substantially 11.1 grams. The ball has a total weight of no more than 46.0 grams and a dimple pattern covering at least 70.0% of the surface of the ball.
    Type: Grant
    Filed: September 20, 1995
    Date of Patent: June 16, 1998
    Assignee: Lisco, Inc.
    Inventors: Robert P. Molitor, R. Dennis Nesbitt, Joseph F. Stiefel, Terence Melvin
  • Patent number: 5735756
    Abstract: A golf ball having an octahedral pattern about its surface with four identical quadrants in each hemisphere. Each quadrant includes a circular area which fills the quadrant as completely as possible without crossing the quadrant boundaries. A dimple is located at each pole. Each circular area is substantially filled with dimples and the remaining interstitial areas between the circular areas and the poles are substantially filled with dimples while leaving a dimple free equatorial line.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: April 7, 1998
    Assignee: Lisco, Inc.
    Inventors: Joseph F. Stiefel, Gary Tavares
  • Patent number: 5688194
    Abstract: A dimple configuration for the surface of a golf ball is provided by selecting a fixed number of dimples, placing said dimples on a model of the ball in random, helter-skelter locations on one selected section without regard to the other dimples present, and identifying each dimple and the adjacent dimples which overlap it. For each dimple so identified, the aggregate component of overlap in the longitudinal and latitudinal directions is determined, the center of each dimple is relocated so as to minimize overlap, and the steps of identifying, determining, and relocating are repeated for each dimple until the aggregate overlap is reduced to a predetermined amount. The resultant ball provides a random dimple configuration which has no repeating patterns within the sections.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: November 18, 1997
    Inventors: Joseph F. Stiefel, Donald J. Bunger
  • Patent number: D381720
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: July 29, 1997
    Assignee: Lisco, Inc.
    Inventors: Joseph F. Stiefel, Donald J. Bunger
  • Patent number: D381721
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: July 29, 1997
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel
  • Patent number: D381722
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: July 29, 1997
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel
  • Patent number: D381723
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: July 29, 1997
    Assignee: Lisco, Inc.
    Inventors: Joseph F. Stiefel, Donald J. Bunger
  • Patent number: D383179
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: September 2, 1997
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel
  • Patent number: D401979
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: December 1, 1998
    Inventor: Joseph F. Stiefel
  • Patent number: D401986
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: December 1, 1998
    Inventor: Joseph F. Stiefel
  • Patent number: D406291
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: March 2, 1999
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel
  • Patent number: D406622
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: March 9, 1999
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel
  • Patent number: D406623
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: March 9, 1999
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel
  • Patent number: D408483
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: April 20, 1999
    Assignee: Lisco, Inc.
    Inventor: Joseph F. Stiefel