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James M Murphy, Herbert Reyes, D Clayton Evans, J Andrew Galloway, Richard C Helmstetter, Daniel R Jacobson: Composite golf club head and method of manufacturing. Callaway Golf Company, Michael A Catania, June 19, 2001: US06248025 (190 worldwide citation)

A golf club having a club head with a striking plate composed of a composite material and having a thickness in the range of 0.010 to 0.250 inches is disclosed herein. The golf club head also has a coefficient of restitution greater than 0.8 under test conditions such as the USGA test conditions spe ...


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J Andrew Galloway, Richard C Helmstetter, Matthew T Cackett, Alan Hocknell, D Clayton Evans, Herbert Reyes, Garth W Smith, James M Murphy: Multiple material golf club head. Callaway Golf Company, Michael A Catania, June 10, 2003: US06575845 (173 worldwide citation)

A fairway wood type golf club having a club head with a major body and a minor body is disclosed herein. The major body is composed of a metal material and has a striking plate section, a return section, a sole section, a ribbon section and a ledge portion. The minor body is preferably composed of a ...


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Richard C Helmstetter, Herbert Reyes, James M Murphy, Matthew T Cackett, Pin Fan: High moment of inertia composite golf club head. Callaway Golf Company, Michael A Catania, August 19, 2003: US06607452 (145 worldwide citation)

A high moment of inertia golf club head composed of a composite material and having a weight strip in a ribbon section is disclosed herein. The weight strip may be composed of copper, tungsten or a similar metal. The moment of inertia, Izz, of the golf club head about a vertical axis Z through the c ...


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Joel B Erickson, D Clayton Evans, Matthew T Cackett, J Andrew Galloway, Herbert Reyes, Alan Hocknell: Golf club head. Callaway Golf Company, Michael A Catania, Elaine H Lo, April 5, 2005: US06875129 (99 worldwide citation)

A golf club head (20) having a body (22) with a front wall (30) with an opening (32) and a striking plate insert (40) is disclosed herein. The body (22) is preferably composed of a light weight material such as a magnesium alloy or an aluminum alloy. A ribbon (28) of the body (22) has a recess (52) ...


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Herbert Reyes, James M Murphy, D Clayton Evans, J Andrew Galloway, Daniel R Jacobson: Composite golf club head with integral weight strip. Callaway Golf Company, Michael A Catania, May 14, 2002: US06386990 (92 worldwide citation)

A golf club head composed of a composite material and having a metal weight strip in a ribbon section is disclosed herein. The metal strip may be composed of copper, tungsten or a similar metal. The composite golf club head may also have a sole plate composed of stainless steel attached to a sole of ...