Inventor · disambiguated record
Derek A. Ladd
Also filed as: LADD DEREK · LADD DEREK A
360 granted patents·55 pending applications·8,091 citations·filing 1998–2025
99Inventor score
Top patents by PatentIndex Score
415 records- 0199US11679304B2Non-conforming golf balls made from plasticized thermoplastic materialsACUSHNET CO·Filed 2022·Granted Jun 20, 2023·2 cites·13 claims
- 0299US6180040B1Method of forming a golf ball coreACUSHNET CO·Filed 1998·Granted Jan 30, 2001·312 cites·21 claims
- 0398US7722482B2Multi-layer core golf ballACUSHNET CO·Filed 2008·Granted May 25, 2010·97 cites·25 claims
- 0498US7591742B2Multilayer golf ballACUSHNET CO·Filed 2008·Granted Sep 22, 2009·42 cites·17 claims
- 0598US7452291B2Foam-core golf ballsACUSHNET CO·Filed 2005·Granted Nov 18, 2008·131 cites·7 claims
- 0698US7410429B1Negative hardness gradient inner core for dual core golf ballACUSHNET CO·Filed 2007·Granted Aug 12, 2008·100 cites·20 claims
- 0798US7255656B2Multi-layer core golf ballACUSHNET CO·Filed 2004·Granted Aug 14, 2007·167 cites·19 claims
- 0898US6916254B2Golf ball with small inner coreACUSHNET CO·Filed 2003·Granted Jul 12, 2005·148 cites·15 claims
- 0998US6692380B2Golf ball with high density centerACUSHNET CO·Filed 2003·Granted Feb 17, 2004·133 cites·29 claims
- 1098US6688991B2Golf ball with foam core and filled coverACUSHNET CO·Filed 2002·Granted Feb 10, 2004·166 cites·18 claims
- 1198US6180722B1Dual core golf ball compositionsACUSHNET CO·Filed 1998·Granted Jan 30, 2001·346 cites·39 claims
- 1297US8152655B2Multi-piece golf ball comprising low hardness gradient coreCOMEAU BRIAN·Filed 2010·Granted Apr 10, 2012·54 cites·13 claims
- 1397US7744489B2Multi-layer core golf ball having opposing hardness gradient with steep gradient outer core layerACUSHNET CO·Filed 2008·Granted Jun 29, 2010·68 cites·20 claims
- 1497US7125345B2Low deformation golf ballACUSHNET CO·Filed 2002·Granted Oct 24, 2006·130 cites·7 claims
- 1596US8618197B2Highly-neutralized thermoplastic copolymer center for improved multi-layer core golf ballSULLIVAN MICHAEL J·Filed 2010·Granted Dec 31, 2013·46 cites·17 claims
- 1696US7935004B2Golf balls having a low modulus HNP layer and a high modulus HNP layerACUSHNET CO·Filed 2008·Granted May 3, 2011·73 cites·16 claims
- 1796US7708654B2Foam-core golf ballsACUSHNET CO·Filed 2005·Granted May 4, 2010·76 cites·2 claims
- 1896US7481723B2High performance golf ball having a reduced-distanceACUSHNET CO·Filed 2005·Granted Jan 27, 2009·93 cites·16 claims
- 1996US7371192B2Golf ballACUSHNET CO·Filed 2006·Granted May 13, 2008·67 cites·14 claims
- 2096US7211008B2Golf balls having a low modulus HNP layer and a high modulus HNP layerACUSHNET CO·Filed 2005·Granted May 1, 2007·65 cites·20 claims
- 2196US7074137B2Golf ballACUSHNET CO·Filed 2004·Granted Jul 11, 2006·60 cites·25 claims
- 2296US6988962B2Multi-layered core golf ballACUSHNET CO·Filed 2004·Granted Jan 24, 2006·134 cites·30 claims
- 2396US6852042B2Golf ballACUSHNET CO·Filed 2002·Granted Feb 8, 2005·93 cites·30 claims
- 2496US6852044B2Multi-layered core golf ballACUSHNET CO·Filed 2003·Granted Feb 8, 2005·129 cites·25 claims
- 2596US6780126B2Golf ball with large inner coreACUSHNET CO·Filed 2003·Granted Aug 24, 2004·84 cites·18 claims
- 2696US6355715B1Multi-layered golf ball and compositionACUSHNET CO·Filed 1999·Granted Mar 12, 2002·86 cites·22 claims
- 2796US6162135ALow compression, resilient golf balls including an inorganic sulfide catalyst and methods for making the sameACUSHNET CO·Filed 1999·Granted Dec 19, 2000·194 cites·29 claims
- 2895US8834297B2Multi-layer core golf ballSULLIVAN MICHAEL J·Filed 2011·Granted Sep 16, 2014·29 cites·20 claims
- 2995US8556748B2Multi-layer core golf ballACUSHNET CO·Filed 2012·Granted Oct 15, 2013·27 cites·12 claims
- 3095US8137214B2Dual-core comprising negative gradient center and positive gradient outer core layerSULLIVAN MICHAEL J·Filed 2010·Granted Mar 20, 2012·43 cites·16 claims
- 3195US7713145B2Multi-layer core golf ballACUSHNET CO·Filed 2009·Granted May 11, 2010·52 cites·20 claims
- 3295US7708656B2Multi-layer core golf ballACUSHNET CO·Filed 2009·Granted May 4, 2010·59 cites·24 claims
- 3395US7468006B2Golf balls having two or more core layers formed from HNP compositionsACUSHNET CO·Filed 2007·Granted Dec 23, 2008·58 cites·20 claims
- 3495US7357736B2Golf balls having a low modulus HNP layer and a high modulus HNP layerACUSHNET CO·Filed 2007·Granted Apr 15, 2008·62 cites·13 claims
- 3595US7331878B2Multi-layer golf ball having velocity gradient from slower center to faster coverACUSHNET CO·Filed 2005·Granted Feb 19, 2008·62 cites·25 claims
- 3695US7259191B2Multi-layer golf ball with a foamed intermediate layerACUSHNET CO·Filed 2005·Granted Aug 21, 2007·66 cites·3 claims
- 3795US6291592B1Low compression, resilient golf balls including aromatic catalyst and method for making sameACUSHNET CO·Filed 1999·Granted Sep 18, 2001·173 cites·52 claims
- 3894US8870684B2Multi-layer core golf ballSULLIVAN MICHAEL J·Filed 2011·Granted Oct 28, 2014·28 cites·19 claims
- 3994US8007375B2Highly-neutralized thermoplastic copolymer center for improved multi-layer core golf ballACUSHNET CO·Filed 2008·Granted Aug 30, 2011·34 cites·11 claims
- 4094US7833113B2Multi-layer golf ballACUSHNET CO·Filed 2009·Granted Nov 16, 2010·40 cites·12 claims
- 4194US7785216B2Golf balls including mechanically hybridized layers and methods of making sameACUSHNET CO·Filed 2007·Granted Aug 31, 2010·62 cites·20 claims
- 4294US7652086B2Highly-neutralized thermoplastic copolymer center for improved multi-layer core golf ballACUSHNET CO·Filed 2006·Granted Jan 26, 2010·62 cites·9 claims
- 4394US7361102B2Golf ball with large inner coreACUSHNET CO·Filed 2006·Granted Apr 22, 2008·39 cites·10 claims
- 4494US7131915B2Three-layer-cover golf ballACUSHNET CO·Filed 2004·Granted Nov 7, 2006·92 cites·20 claims
- 4594US7037965B2Golf balls comprising glass ionomers, ormocers, or other hybrid organic/inorganic compositionsACUSHNET CO·Filed 2004·Granted May 2, 2006·95 cites·19 claims
- 4694US6902498B2Perimeter weighted golf ballACUSHNET CO·Filed 2003·Granted Jun 7, 2005·63 cites·31 claims
- 4794US6284840B1Golf ball core compositions containing high Vicat softening temperature, resilient thermoplastic materialsACUSHNET CO·Filed 1999·Granted Sep 4, 2001·108 cites·34 claims
- 4893US7887438B2Multi-layer golf ballACUSHNET CO·Filed 2008·Granted Feb 15, 2011·47 cites·20 claims
- 4993US7713146B2Multi-layer core golf ballACUSHNET CO·Filed 2009·Granted May 11, 2010·43 cites·24 claims
- 5093US7537530B2Golf ball with negative hardness gradient coreACUSHNET CO·Filed 2007·Granted May 26, 2009·56 cites·20 claims
Showing the top 50 of 415 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →