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Ronald K Hettinger, J Neil Hall, Augustin W Rollinson, Kamal Sarkar: Bi-material golf club head having an isolation layer. Callaway Golf Company, Michael A Catania, August 1, 2000: US06095931 (90 worldwide citation)

A bimetallic golf club head having a weight body for lowering the center of gravity of the golf club head in order to increase vertical gear effect upon impact with a golf ball, while also providing for an isolation layer between the golf club head's weight body and a main body portion comprising a ...


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Alan Hocknell, Uday V Deshmukh, Richard C Helmstetter, Matthew T Cackett, Herebert Reyes, James M Murphy, D Clayton Evans, J Andrew Galloway, Garth W Smith, Augustin W Rollinson: Multiple material golf club head. Callaway Golf Company, Michael A Catania, Elaine H Lo, December 16, 2003: US06663504 (89 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 an amorphous 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 co ...


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James M Murphy, Herbert Reyes, Peter L Soracco, Matthew T Cackett, J Andrew Galloway, Richard C Helmstetter, Augustin W Rollinson, Alan Hocknell: Multiple material golf club head. Callaway Golf Company, Michael A Catania, Elaine H Lo, August 7, 2007: US07252600 (88 worldwide citation)

A golf club (40) having a club head (42) with a face component (60) and an aft body (61) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61) is composed of a crown portion (62), a sole portion (64) and optionally a ribbon sectio ...