Inventor · disambiguated record
Mark Knapp
Also filed as: KNAPP MARK · KNAPP MARK A
22 granted patents·6 pending applications·368 citations·filing 2000–2025
96Inventor score
Files withSPRINGSEAL INC11KNAPP MARK10MALCOLM MANN INC3ADVANCED DRAINAGE SYST1ADVANCED ELASTOMER SYSTEMS1
Top patents by PatentIndex Score
28 records- 0196US6367802B1Annular gasket with locking structureMALCOLM MANN INC·Filed 2000·Granted Apr 9, 2002·86 cites·22 claims
- 0294US7731884B2Molded gasket and method of makingADVANCED ELASTOMER SYSTEMS·Filed 2005·Granted Jun 8, 2010·27 cites·21 claims
- 0394US7469905B2Permanently lubricated film gasket and method of manufactureSPRINGSEAL INC·Filed 2006·Granted Dec 30, 2008·33 cites·24 claims
- 0492US8747584B2Flashless welding method and apparatusKNAPP MARK·Filed 2011·Granted Jun 10, 2014·14 cites·15 claims
- 0591USD706908SGasketKNAPP MARK·Filed 2012·Granted Jun 10, 2014·54 cites·1 claims
- 0691US6550775B2Annular gasketMALCOLM MANN INC·Filed 2001·Granted Apr 22, 2003·55 cites·14 claims
- 0789US8678399B2GasketKNAPP MARK·Filed 2013·Granted Mar 25, 2014·7 cites·10 claims
- 0888US7503992B2Flashless welding method and apparatusSPRINGSEAL INC·Filed 2006·Granted Mar 17, 2009·10 cites·26 claims
- 0987US9228684B2Sealing gasketKNAPP MARK·Filed 2012·Granted Jan 5, 2016·7 cites·21 claims
- 1087US8727387B2Pipe coupling assemblyKNAPP MARK·Filed 2009·Granted May 20, 2014·13 cites·14 claims
- 1186USD865918SCoupling assemblySPRINGSEAL INC·Filed 2017·Granted Nov 5, 2019·3 cites·1 claims
- 1285US6336640B1GasketMALCOLM MANN INC·Filed 2000·Granted Jan 8, 2002·37 cites·21 claims
- 1381US10046516B2Flexible hinge gasketKNAPP MARK·Filed 2011·Granted Aug 14, 2018·3 cites·24 claims
- 1478US11629803B2Pipe coupling assemblySPRINGSEAL INC·Filed 2020·Granted Apr 18, 2023·1 cites·20 claims
- 1577US9752711B2Pipe coupling assemblySPRINGSEAL INC·Filed 2014·Granted Sep 5, 2017·3 cites·28 claims
- 1674US8474830B2GasketKNAPP MARK·Filed 2007·Granted Jul 2, 2013·5 cites·28 claims
- 1770US8834761B2Permanently lubricated film gasket and method of manufactureKNAPP MARK·Filed 2008·Granted Sep 16, 2014·4 cites·17 claims
- 1868US8801049B2Pipe coupling system and methodKNAPP MARK·Filed 2012·Granted Aug 12, 2014·5 cites·19 claims
- 1965USD980954SCoupling assemblySPRINGSEAL INC·Filed 2019·Granted Mar 14, 2023·0 cites·1 claims
- 2062US11400782B2Axle assembly and method of manufacture i'hereofSPRINGSEAL INC·Filed 2020·Granted Aug 2, 2022·0 cites·21 claims
- 2161US7861757B2Flashless welding method and apparatusSPRINGSEAL INC·Filed 2009·Granted Jan 4, 2011·0 cites·7 claims
- 2258US9746112B2Permanently lubricated film gasket and method of manufactureSPRING SEAL INC·Filed 2014·Granted Aug 29, 2017·1 cites·23 claims
- 2358US2025257827A1Bell and Spigot and Method of Making SameSPRINGSEAL INC·Filed 2025·Application pending·0 cites
- 2457US2024401347A1Non-stick epoxy applicator and method of makingSPRINGSEAL INC·Filed 2024·Application pending·0 cites
- 2553US2025102088A1Plastic corrugated pipe dual wall to concrete manhole sleeve adapterADVANCED DRAINAGE SYST·Filed 2024·Application pending·0 cites
- 2641US2004041347A1Permanently lubricated gasketFiled 2003·Application pending·0 cites
- 2741US2010270753A1High strength composite pipe gasketSPRINGSEAL INC·Filed 2010·Application pending·0 cites
- 2830US2010181766A1Integral pipe gasketKNAPP MARK·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →