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J Andrew Galloway, Richard C Helmstetter, Alan Hocknell, Ronald C Boyce, Homer E Aguinaldo, Curtis S Woolley: Golf club head with a face composed of a forged material. Callaway Golf Company, Michael A Catania, March 12, 2002: US06354962 (240 worldwide citation)

A golf club having a club head with a striking plate having a thickness in the range of 0.010 to 0.250 inches is disclosed herein. The club head may be composed of three pieces, a face, a sole and a crown. Each of the pieces may be composed of a titanium material. The striking plate of the club head ...


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J Andrew Galloway, Richard C Helmstetter, Alan Hocknell, Ronald C Boyce, Homer E Aguinaldo: High cofficient of restitution golf club head. Callaway Golf Company, Michael A Catania, May 21, 2002: US06390933 (227 worldwide citation)

A golf club having a club head having with a coefficient of restitution greater than 0.845 and a durability to withstand 2000 impacts with a golf ball at 110 mile per hour is disclosed herein. The club head may be composed of three pieces, a face, a sole and a crown. Each of the pieces may be compos ...


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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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Glenn H Schmidt, John P Sheehan, Richard C Helmstetter: Hollow, metallic golf club head with dendritic structure. Callaway Golf Company, William W Haefliger, November 26, 1991: US05067715 (189 worldwide citation)

A metal wood golf club head has an elongated, forwardly facing front wall to strike a golf ball, and a hollow body rearwardly of the face plate, the front wall elongated in a first transverse direction toward connection to a club shaft, the body having a thin, metallic top wall merging with upper tr ...


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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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