Inventor · disambiguated record
Richard C. Helmstetter
Also filed as: HELMSTETTER RICHARD · HELMSTETTER RICHARD C · SCHMIDT GLENN HOWARD
186 granted patents·4 pending applications·22,983 citations·filing 1988–2007
99Inventor score
Top patents by PatentIndex Score
190 records- 0199US7252600B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2004·Granted Aug 7, 2007·205 cites·22 claims
- 0299US6926619B2Golf club head with customizable center of gravityCALLAWAY GOLF CO·Filed 2004·Granted Aug 9, 2005·187 cites·24 claims
- 0399US6758763B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2002·Granted Jul 6, 2004·236 cites·10 claims
- 0499US6739982B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2003·Granted May 25, 2004·261 cites·13 claims
- 0599US6739983B2Golf club head with customizable center of gravityCALLAWAY GOLF CO·Filed 2003·Granted May 25, 2004·455 cites·39 claims
- 0699USD485320SPutter headCALLAWAY GOLF CO·Filed 2003·Granted Jan 13, 2004·193 cites·1 claims
- 0799US6612938B2Composite golf club headCALLAWAY GOLF CO·Filed 2001·Granted Sep 2, 2003·176 cites·2 claims
- 0899US6582323B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2002·Granted Jun 24, 2003·368 cites·18 claims
- 0999US6575845B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2002·Granted Jun 10, 2003·380 cites·12 claims
- 1099US6565452B2Multiple material golf club head with face insertCALLAWAY GOLF CO·Filed 2002·Granted May 20, 2003·381 cites·14 claims
- 1199US6547676B2Golf club head that optimizes products of inertiaCALLAWAY GOLF CO·Filed 2002·Granted Apr 15, 2003·155 cites·15 claims
- 1299US6491592B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2001·Granted Dec 10, 2002·495 cites·15 claims
- 1399US6471600B2Putter headCALLAWAY GOLF CO·Filed 2002·Granted Oct 29, 2002·276 cites·10 claims
- 1499US6425832B2Golf club head that optimizes products of inertiaCALLAWAY GOLF CO·Filed 2001·Granted Jul 30, 2002·262 cites·20 claims
- 1599USD458656SPutter headCALLAWAY GOLF CO·Filed 2001·Granted Jun 11, 2002·182 cites·1 claims
- 1699US6390933B1High cofficient of restitution golf club headCALLAWAY GOLF CO·Filed 2000·Granted May 21, 2002·478 cites·8 claims
- 1799USD457586SPutter headCALLAWAY GOLF CO·Filed 2001·Granted May 21, 2002·146 cites·1 claims
- 1899US6381828B1Chemical etching of a striking plate for a golf club headCALLAWAY GOLF CO·Filed 2000·Granted May 7, 2002·228 cites·8 claims
- 1999US6371868B1Internal off-set hosel for a golf club headCALLAWAY GOLF CO·Filed 2000·Granted Apr 16, 2002·120 cites·10 claims
- 2099US6354962B1Golf club head with a face composed of a forged materialCALLAWAY GOLF CO·Filed 1999·Granted Mar 12, 2002·557 cites·7 claims
- 2199US6248025B1Composite golf club head and method of manufacturingCALLAWAY GOLF CO·Filed 1999·Granted Jun 19, 2001·420 cites·8 claims
- 2299USD402343SGolf putter headCALLAWAY GOLF CO·Filed 1997·Granted Dec 8, 1998·147 cites·1 claims
- 2399USD357520SGolf club iron headCALLAWAY GOLF CO·Filed 1992·Granted Apr 18, 1995·162 cites·1 claims
- 2499USD318087SGolf driver headCALLAWAY GOLF CO·Filed 1989·Granted Jul 9, 1991·118 cites·1 claims
- 2598US7387577B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2006·Granted Jun 17, 2008·113 cites·9 claims
- 2698US7255654B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2006·Granted Aug 14, 2007·131 cites·10 claims
- 2798US6994637B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2004·Granted Feb 7, 2006·114 cites·12 claims
- 2898US6881159B2Multiple material golf club headCALLAWAY GOLF CO·Filed 2003·Granted Apr 19, 2005·187 cites·21 claims
- 2998USD486194SPutter headCALLAWAY GOLF CO·Filed 2003·Granted Feb 3, 2004·118 cites·1 claims
- 3098USD485321SPutter headCALLAWAY GOLF CO·Filed 2003·Granted Jan 13, 2004·125 cites·1 claims
- 3198US6669577B1Golf club head with a face insertCALLAWAY GOLF CO·Filed 2002·Granted Dec 30, 2003·198 cites·2 claims
- 3298USD481089SPutter headCALLAWAY GOLF CO·Filed 2003·Granted Oct 21, 2003·114 cites·1 claims
- 3398US6607452B2High moment of inertia composite golf club headCALLAWAY GOLF CO·Filed 2001·Granted Aug 19, 2003·324 cites·6 claims
- 3498US6582321B2Golf club headCALLAWAY GOLF CO·Filed 2002·Granted Jun 24, 2003·76 cites·5 claims
- 3598USD472595SPutter headCALLAWAY GOLF CO·Filed 2002·Granted Apr 1, 2003·126 cites·1 claims
- 3698USD472594SPutter headCALLAWAY GOLF CO·Filed 2002·Granted Apr 1, 2003·119 cites·1 claims
- 3798US6506125B2Putter headCALLAWAY GOLF CO·Filed 2001·Granted Jan 14, 2003·203 cites·16 claims
- 3898US6475102B2Golf club headCALLAWAY GOLF CO·Filed 2002·Granted Nov 5, 2002·175 cites·10 claims
- 3998US6471604B2Multiple material golf headCALLAWAY GOLF CO·Filed 2002·Granted Oct 29, 2002·455 cites·15 claims
- 4098US6440008B2Composite golf club headCALLAWAY GOLF CO·Filed 2001·Granted Aug 27, 2002·194 cites·3 claims
- 4198US6364788B1Weighting system for a golf club headCALLAWAY GOLF CO·Filed 2000·Granted Apr 2, 2002·201 cites·11 claims
- 4298USD453949SIron golf club headCALLAWAY GOLF CO·Filed 2001·Granted Feb 26, 2002·113 cites·1 claims
- 4398US6238302B1Golf club head with an insert having integral tabsCALLAWAY GOLF CO·Filed 1999·Granted May 29, 2001·219 cites·21 claims
- 4498US5749795AIron golf club head with dual intersecting recessesCALLAWAY GOLF CO·Filed 1995·Granted May 12, 1998·259 cites·85 claims
- 4598USD388851SGolf putter head with recessed and fluted rear side and stepped top wallCALLAWAY GOLF CO·Filed 1996·Granted Jan 6, 1998·89 cites·1 claims
- 4698USD385933SGolf putter head with recessed and fluted rear sideCALLAWAY GOLF CO·Filed 1996·Granted Nov 4, 1997·91 cites·1 claims
- 4798USD383512SGolf putter head with undercut cavity backCALLAWAY GOLF CO·Filed 1994·Granted Sep 9, 1997·87 cites·1 claims
- 4898USD378113SGolf putter head with fluted rear side and stepped top wallCALLAWAY GOLF CO·Filed 1996·Granted Feb 18, 1997·90 cites·1 claims
- 4998USD373161SGolf putter head with face plate insertSCHMIDT GLENN H·Filed 1994·Granted Aug 27, 1996·106 cites·1 claims
- 5098USD365130SGolf putter head with dished bottom surfaces and curved shaftCALLAWAY GOLF CO·Filed 1994·Granted Dec 12, 1995·90 cites·1 claims
Showing the top 50 of 190 patent records by PatentIndex Score.
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