JK

John B. Kosmatka

CG Callaway Golf: 32 patents #47 of 359Top 15%
University of California: 2 patents #4,561 of 18,278Top 25%
Overall (All Time): #94,908 of 4,157,543Top 3%
36
Patents All Time

Issued Patents All Time

Showing 25 most recent of 36 patents

Patent #TitleCo-InventorsDate
7992763 Fabrication of structural armor Kenneth Vecchio, Aashish Rohatgi 2011-08-09
7946930 Face structure for a golf club head Steven M. Ehlers, Anthony Nigro, Matthew J. Erickson 2011-05-24
7878922 Face structure for a golf club head Steven M. Ehlers, Anthony Nigro, Matthew J. Erickson 2011-02-01
7645201 Method and apparatus for forming a face structure for a golf club head Steven M. Ehlers, Anthony Nigro, Matthew Erickson 2010-01-12
7621435 Designs and fabrication of structural armor Kenneth Vecchio, Aashish Rohatgi 2009-11-24
7527565 Method and apparatus for forming a face structure for a golf club head Steven M. Ehlers, Anthony Nigro, Matthew J. Erickson 2009-05-05
7144334 Golf club head Steven M. Ehlers, Anthony Nigro, Matthew J. Erickson 2006-12-05
6949032 Golf club head having a striking face with improved impact efficiency 2005-09-27
6932716 Golf club head Steven M. Ehlers, Anthony Nigro, Matthew J. Erickson 2005-08-23
6800037 Striking plate for a golf club head 2004-10-05
6709344 Measurement of the coefficient of restitution of a golf club Matthew J. Erickson, Pin Fan, Steven M. Ehlers 2004-03-23
6685576 Golf club head having a striking face with improved impact efficiency 2004-02-03
6669579 Golf club head having a striking face with improved impact efficiency 2003-12-30
6638182 Golf club head with coated striking plate 2003-10-28
6607451 Compliant polymer face golf club head David L. Felker, Pijush Dewanjee 2003-08-19
6602150 Golf club striking plate with vibration attenuation 2003-08-05
6585605 Measurement of the coefficient of restitution of a golf club Matthew J. Erickson, Pin Fan, Steven M. Ehlers 2003-07-01
6569033 Striking plate for a golf club head 2003-05-27
6527648 Measurement of the coefficient of restitution of a golf club Matthew J. Erickson, Frank Fan, Steven M. Ehlers 2003-03-04
6478692 Golf club head having a striking face with improved impact efficiency 2002-11-12
6471603 Contoured golf club face 2002-10-29
6428427 Golf club head with coated striking plate 2002-08-06
6413169 Contoured golf club face 2002-07-02
6390932 Compliant polymer face golf club head David L. Felker, Pijush Dewanjee 2002-05-21
6364789 Golf club head 2002-04-02