Inventor · disambiguated record
Gary D. Lehnhardt
Also filed as: LEHNHARDT GARY D
9 granted patents·2 pending applications·220 citations·filing 1987–2003
90Inventor score
Files withFORMS CONST9
Top patents by PatentIndex Score
11 records- 0191US6758500B2Flared ends conduit couplingFORMS CONST·Filed 2003·Granted Jul 6, 2004·53 cites·19 claims
- 0291US6467812B1Pipe having replaceable wear resistant lined couplerFORMS CONST·Filed 1996·Granted Oct 22, 2002·65 cites·24 claims
- 0380US5379805ASingle solid thin wall pipe for abrasive material having a gradual transition in hardnessFORMS CONST·Filed 1992·Granted Jan 10, 1995·22 cites·7 claims
- 0472US6766570B1Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concreteFORMS CONST·Filed 2002·Granted Jul 27, 2004·16 cites·10 claims
- 0569US6375228B1Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concreteFORMS CONST·Filed 1999·Granted Apr 23, 2002·29 cites·25 claims
- 0663US6913041B2Tapered boom hoseFORMS CONST·Filed 2002·Granted Jul 5, 2005·10 cites·5 claims
- 0753US4796814ASemi-liquid cementitious spray nozzle apparatusFORMS CONST·Filed 1987·Granted Jan 10, 1989·20 cites·20 claims
- 0848US6817591B2Concrete hose shut-off valveFORMS CONST·Filed 2002·Granted Nov 16, 2004·2 cites·6 claims
- 0940US6871832B2Fiberglass, reinforced concrete hose shut-off valveFORMS CONST·Filed 2003·Granted Mar 29, 2005·3 cites·3 claims
- 1040US2003127854A1Method and apparatus for a line concrete pumping systemFiled 2002·Application pending·0 cites
- 1134US2003127851A1Auto lock coupling with assymetrically-shaped gasketFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →