Inventor · disambiguated record
Douglas C. Winfield
Also filed as: WINFIELD DOUGLAS · WINFIELD DOUGLAS C
58 granted patents·17 pending applications·1,654 citations·filing 1994–2017
99Inventor score
Top patents by PatentIndex Score
75 records- 0198US6488591B1Method and apparatus to determine golf ball trajectory and flightACUSHNET CO·Filed 2000·Granted Dec 3, 2002·150 cites·17 claims
- 0298US6338684B1Phyllotaxis-based dimple patternsACUSHNET CO·Filed 1999·Granted Jan 15, 2002·212 cites·21 claims
- 0398US6241622B1Method and apparatus to determine golf ball trajectory and flightACUSHNET CO·Filed 1998·Granted Jun 5, 2001·228 cites·45 claims
- 0496US6781621B1Launch monitor system with a calibration fixture and a method for use thereofACUSHNET CO·Filed 2000·Granted Aug 24, 2004·118 cites·14 claims
- 0594US6758759B2Launch monitor system and a method for use thereofACUSHNET CO·Filed 2001·Granted Jul 6, 2004·101 cites·23 claims
- 0694US6682442B2Dimple patterns on golf ballsACUSHNET CO·Filed 2001·Granted Jan 27, 2004·95 cites·4 claims
- 0794US6500073B1Method and apparatus to determine golf ball trajectory and flightACUSHNET CO·Filed 1999·Granted Dec 31, 2002·155 cites·28 claims
- 0893US6764412B2Method and apparatus to determine golf ball trajectory and flightACUSHNET CO·Filed 2002·Granted Jul 20, 2004·56 cites·17 claims
- 0993US6285445B1Method for determining aerodynamic characteristics of a golf ballACUSHNET CO·Filed 1999·Granted Sep 4, 2001·98 cites·23 claims
- 1092US8038548B2Low lift golf ballAERO X GOLF INC·Filed 2010·Granted Oct 18, 2011·14 cites·20 claims
- 1189US6390934B1Method of image processing of paint dots on golf ballsACUSHNET CO·Filed 2001·Granted May 21, 2002·57 cites·13 claims
- 1288US6616543B1Apparatus to determine golf ball trajectory and flightACUSHNET CO·Filed 2000·Granted Sep 9, 2003·35 cites·18 claims
- 1384US6682441B2Phyllotaxis-based dimple patternsACUSHNET CO·Filed 2002·Granted Jan 27, 2004·29 cites·20 claims
- 1483US7086955B2Method and apparatus to determine golf ball trajectory and flightACUSHNET CO·Filed 2004·Granted Aug 8, 2006·23 cites·16 claims
- 1583US6527653B2Pentagonal hexecontahedron dimple pattern on golf ballsACUSHNET CO·Filed 2001·Granted Mar 4, 2003·35 cites·19 claims
- 1683US6186002B1Method for determining coefficients of lift and drag of a golf ballUS GOLF ASSOCIATES·Filed 1998·Granted Feb 13, 2001·96 cites·31 claims
- 1776USD646736SGolf ballAERO X GOLF INC·Filed 2010·Granted Oct 11, 2011·21 cites·1 claims
- 1875US8267810B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Sep 18, 2012·2 cites·32 claims
- 1975US8262513B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Sep 11, 2012·2 cites·60 claims
- 2075US8226502B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Jul 24, 2012·2 cites·43 claims
- 2175US8197361B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Jun 12, 2012·2 cites·32 claims
- 2275US8192307B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Jun 5, 2012·2 cites·22 claims
- 2375US6533684B2Phyllotaxis-based dimple patternsACUSHNET CO·Filed 2001·Granted Mar 18, 2003·17 cites·14 claims
- 2474US8382613B2Low lift golf ballAERO X GOLF INC·Filed 2010·Granted Feb 26, 2013·2 cites·36 claims
- 2571US6571600B2Apparatus and method for measurement of coefficient of restitution and contact timeACUSHNET CO·Filed 2001·Granted Jun 3, 2003·19 cites·36 claims
- 2669US8795103B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Aug 5, 2014·1 cites·23 claims
- 2765USD645529SGolf ballAERO X GOLF INC·Filed 2010·Granted Sep 20, 2011·13 cites·1 claims
- 2862US9211442B2Anti-slice golf ball constructionFELKER DAVID L·Filed 2012·Granted Dec 15, 2015·2 cites·50 claims
- 2962US7160209B2Multilayer golf ballTAYLORMADE ADIDAS GOLF COMPANY·Filed 2004·Granted Jan 9, 2007·13 cites·15 claims
- 3061US2014349782A1Low lift golf ballAERO X GOLF INC·Filed 2014·Application pending·0 cites
- 3160US6609983B2Dimple pattern on golf ballsACUSHNET CO·Filed 2001·Granted Aug 26, 2003·9 cites·10 claims
- 3258USD831138SGolf ballFOREMOST GOLF MFG LTD·Filed 2017·Granted Oct 16, 2018·7 cites·1 claims
- 3358US7369158B2Launch monitor system with a calibration fixture and a method for use thereofACUSHNET CO·Filed 2004·Granted May 6, 2008·6 cites·11 claims
- 3456US8708839B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Apr 29, 2014·0 cites·37 claims
- 3556US8708840B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Apr 29, 2014·0 cites·42 claims
- 3656US8602916B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Dec 10, 2013·0 cites·24 claims
- 3756US8579730B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Nov 12, 2013·0 cites·37 claims
- 3856US8574098B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Nov 5, 2013·0 cites·57 claims
- 3956US8550938B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Oct 8, 2013·0 cites·20 claims
- 4056US8550937B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Oct 8, 2013·0 cites·42 claims
- 4156US8512167B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Aug 20, 2013·0 cites·57 claims
- 4256US8491419B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Jul 23, 2013·0 cites·28 claims
- 4356US8491420B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Jul 23, 2013·0 cites·44 claims
- 4456US8475299B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Jul 2, 2013·0 cites·22 claims
- 4556US8454456B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Jun 4, 2013·0 cites·40 claims
- 4656US8388467B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Mar 5, 2013·0 cites·55 claims
- 4756US8388468B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Mar 5, 2013·0 cites·61 claims
- 4856US8371961B2Low lift golf ballAERO X GOLF INC·Filed 2010·Granted Feb 12, 2013·0 cites·37 claims
- 4956US8366569B2Low lift golf ballAERO X GOLF INC·Filed 2010·Granted Feb 5, 2013·0 cites·19 claims
- 5056US8251840B2Low lift golf ballFELKER DAVID L·Filed 2010·Granted Aug 28, 2012·0 cites·19 claims
Showing the top 50 of 75 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →