Inventor · disambiguated record
David J. Ludlow
Also filed as: LUDLOW DAVID J · LUDLOW DAVID JON · LUDLOW DAVID VENN
10 granted patents·2 pending applications·268 citations·filing 1994–2012
91Inventor score
Top patents by PatentIndex Score
12 records- 0188US7908684B2Spas and bathing systems with upgradeable and interchangeable jet stationsBULLFROG INTERNATIONAL L C·Filed 2007·Granted Mar 22, 2011·20 cites·8 claims
- 0282US8881321B1Spa construction and installation systemBULLFROG INTERNATIONAL L C·Filed 2012·Granted Nov 11, 2014·8 cites·5 claims
- 0379US5754989APlumbing and shell system for spaFiled 1996·Granted May 26, 1998·59 cites·23 claims
- 0476US8661576B2Spas and bathing systems with upgradeable and interchangeable jet stationsLUDLOW DAVID J·Filed 2011·Granted Mar 4, 2014·8 cites·12 claims
- 0576US6543067B2Integrated manifold system for spasBULLFROG INTERNATIONAL L C·Filed 2001·Granted Apr 8, 2003·26 cites·18 claims
- 0670US6256805B1Modular system for spas and bathing systemsBULLFROG INTERNATIONAL L C·Filed 1999·Granted Jul 10, 2001·41 cites·12 claims
- 0768US5987663AModular system for spas and bathing systemsBULLFROG INTERNATIONAL L C·Filed 1998·Granted Nov 23, 1999·39 cites·23 claims
- 0867US5474673ATop mounted biological filtration system for an aquariumFiled 1994·Granted Dec 12, 1995·27 cites·17 claims
- 0966US6092246APlumbing and shell system for spaFiled 1998·Granted Jul 25, 2000·36 cites·18 claims
- 1064US8869469B2In-ground spa installationLUDLOW DAVID J·Filed 2012·Granted Oct 28, 2014·4 cites·15 claims
- 1157US2009172873A1Spa construction and installation systemLUDLOW DAVID J·Filed 2008·Application pending·0 cites
- 1233US2005079627A1Absorbance monitoringFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →