Inventor · disambiguated record
Douglas E. Roberts
Also filed as: ROBERTS DOUGLAS · ROBERTS DOUGLAS E · ROBERTS DOUGLAS ENDRESS
155 granted patents·18 pending applications·4,701 citations·filing 1997–2023
99Inventor score
Files withCOBRA GOLF INC58ROGER CLEVELAND GOLF CO INC36SRI SPORTS LTD11ACUSHNET CO10ROBERTS DOUGLAS E8
Top patents by PatentIndex Score
173 records- 0199US7789771B2Golf club headSRI SPORTS LTD·Filed 2008·Granted Sep 7, 2010·75 cites·7 claims
- 0299USD523917SIron-type golf club headROGER CLEVELAND GOLF CO INC·Filed 2004·Granted Jun 27, 2006·185 cites·1 claims
- 0399USD508545SGolf club headROGER CLEVELAND GOLF CO INC·Filed 2004·Granted Aug 16, 2005·254 cites·1 claims
- 0499USD469833SIron-type golf club headROGER CLEVELAND GOLF CO INC·Filed 2002·Granted Feb 4, 2003·272 cites·1 claims
- 0598US8827832B2Golf club heads with enlarged groovesBREIER JOSHUA G·Filed 2011·Granted Sep 9, 2014·253 cites·12 claims
- 0698US8092316B2Golf club having removable sole weight using custom and interchangeable panelsBREIER JOSHUA G·Filed 2010·Granted Jan 10, 2012·72 cites·13 claims
- 0798US7563176B2Muscle back, with insert, iron type golf club headROGER CLEVELAND GOLF CO INC·Filed 2007·Granted Jul 21, 2009·91 cites·18 claims
- 0898USD591818SGolf club headACUSHNET CO·Filed 2008·Granted May 5, 2009·107 cites·1 claims
- 0998USD507320SWedge-type golf club headROGER CLEVELAND GOLF CO INC·Filed 2003·Granted Jul 12, 2005·162 cites·1 claims
- 1097US10213665B1Golf club head with adjustable weightCOBRA GOLF INC·Filed 2016·Granted Feb 26, 2019·65 cites·8 claims
- 1197US9238162B2Golf club with adjustable weight assemblyCOBRA GOLF INC·Filed 2014·Granted Jan 19, 2016·65 cites·11 claims
- 1297US8771097B2Golf club with trough in soleCOBRA GOLF INC·Filed 2012·Granted Jul 8, 2014·68 cites·13 claims
- 1397US8105175B2Golf club having removable sole weight using custom and interchangeable panelsBREIER JOSHUA G·Filed 2009·Granted Jan 31, 2012·82 cites·19 claims
- 1497US7871336B2Golf club having removable sole weight using custom and interchangeable panelsACUSHNET CO·Filed 2009·Granted Jan 18, 2011·71 cites·16 claims
- 1597US7553241B2Set of golf clubsROGER CLEVELAND GOLF CO INC·Filed 2007·Granted Jun 30, 2009·97 cites·5 claims
- 1697US7500926B2Golf club headROGER CLEVELAND GOLF CO INC·Filed 2007·Granted Mar 10, 2009·80 cites·53 claims
- 1797USD580504SClub headACUSHNET CO·Filed 2007·Granted Nov 11, 2008·132 cites·1 claims
- 1897US7390270B2Muscle-back, with insert, iron type golf club headROGER CLEVELAND GOLF CO INC·Filed 2005·Granted Jun 24, 2008·70 cites·2 claims
- 1997USD516650SIron-type golf club headROGER CLEVELAND GOLF CO INC·Filed 2005·Granted Mar 7, 2006·172 cites·1 claims
- 2096US7938736B2Set of golf clubsSRI SPORTS LTD·Filed 2010·Granted May 10, 2011·48 cites·6 claims
- 2196US7789773B2Golf club headSRI SPORTS LTD·Filed 2008·Granted Sep 7, 2010·55 cites·14 claims
- 2296USD618751SGolf club head soleCOBRA GOLF INC·Filed 2009·Granted Jun 29, 2010·68 cites·1 claims
- 2395US9908018B2Muscle-back, with insert, iron type golf club headDUNLOP SPORTS CO LTD·Filed 2014·Granted Mar 6, 2018·26 cites·15 claims
- 2495US9855474B2Golf club head with accessible interiorCOBRA GOLF INC·Filed 2016·Granted Jan 2, 2018·25 cites·13 claims
- 2595US9561405B2Golf club headSRI SPORTS LTD·Filed 2014·Granted Feb 7, 2017·25 cites·20 claims
- 2695US9433836B2Golf club with adjustable weight assemblyCOBRA GOLF INC·Filed 2014·Granted Sep 6, 2016·50 cites·11 claims
- 2795US9421438B2Golf club head with accessible interiorCOBRA GOLF INC·Filed 2014·Granted Aug 23, 2016·44 cites·5 claims
- 2895US8251834B2Golf club head with improved performanceCURTIS ANDREW J·Filed 2009·Granted Aug 28, 2012·62 cites·18 claims
- 2995USD508273SGolf putter club headROGER CLEVELAND GOLF CO INC·Filed 2004·Granted Aug 9, 2005·61 cites·1 claims
- 3094US8753229B2Golf club headSRI SPORTS LTD·Filed 2013·Granted Jun 17, 2014·21 cites·10 claims
- 3194USD592723SGolf club headACUSHNET CO·Filed 2008·Granted May 19, 2009·61 cites·1 claims
- 3293US9616301B2Releasable threaded component for a golf club having a mechanism for preventing over rotationCOBRA GOLF INC·Filed 2015·Granted Apr 11, 2017·23 cites·10 claims
- 3393US9498686B2Golf club with adjustable weight assemblyCOBRA GOLF INC·Filed 2015·Granted Nov 22, 2016·17 cites·20 claims
- 3493USD684230SGolf club headROBERTS DOUGLAS E·Filed 2012·Granted Jun 11, 2013·57 cites·1 claims
- 3593US8303432B2Golf club head with improved performanceCURTIS ANDREW J·Filed 2009·Granted Nov 6, 2012·33 cites·20 claims
- 3693USD667516SGolf club headGONZALEZ OSWALDO·Filed 2011·Granted Sep 18, 2012·60 cites·1 claims
- 3793USD519179SRear cavity surface design for perimeter weighted iron-type golf club headROGER CLEVELAND GOLF CO INC·Filed 2004·Granted Apr 18, 2006·48 cites·1 claims
- 3892US9220959B2Golf club with cellular mass distributionCOBRA GOLF INC·Filed 2013·Granted Dec 29, 2015·26 cites·13 claims
- 3992US8529369B2Golf club headRAE JOHN J·Filed 2010·Granted Sep 10, 2013·19 cites·36 claims
- 4092USD665863SGolf club headGONZALEZ OSWALDO·Filed 2011·Granted Aug 21, 2012·56 cites·1 claims
- 4191US11285365B1Golf club with perimeter face machiningCOBRA GOLF INC·Filed 2020·Granted Mar 29, 2022·3 cites·16 claims
- 4291US10835787B1Golf club with perimeter face machiningCOBRA GOLF INC·Filed 2019·Granted Nov 17, 2020·11 cites·20 claims
- 4391US8152652B2Golf club head with improved performanceCURTIS ANDREW J·Filed 2009·Granted Apr 10, 2012·43 cites·16 claims
- 4490US9427632B2Golf club heads with enlarged groovesCOBRA GOLF INC·Filed 2014·Granted Aug 30, 2016·20 cites·20 claims
- 4590US8419568B2Muscle-back, with insert, iron type golf club headROBERTS DOUGLAS E·Filed 2011·Granted Apr 16, 2013·16 cites·14 claims
- 4690US8262501B2Golf club head with improved performanceCURTIS ANDREW J·Filed 2009·Granted Sep 11, 2012·25 cites·24 claims
- 4789US10065089B2Golf club headDUNLOP SPORTS CO LTD·Filed 2017·Granted Sep 4, 2018·7 cites·17 claims
- 4889US9968833B2Golf club with adjustable weight assemblyCOBRA GOLF INC·Filed 2016·Granted May 15, 2018·10 cites·20 claims
- 4989US9162119B2Golf club headDUNLOP SPORTS CO LTD·Filed 2013·Granted Oct 20, 2015·13 cites·13 claims
- 5089US8328660B2Muscle-back, with insert, iron type golf club headROBERTS DOUGLAS E·Filed 2011·Granted Dec 11, 2012·14 cites·6 claims
Showing the top 50 of 173 patent records by PatentIndex Score.
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