Assignee
CONTECH CONSTRUCTION PRODUCTS
US·15 granted patents·427 citations·filing 1985–2008
Top patents by PatentIndex Score
15 records- 0188US5564857ASlutted drainCONTECH CONSTRUCTION PRODUCTS·Filed 1995·Granted Oct 15, 1996·48 cites·6 claims
- 0288US5380121ASlotted drainCONTECH CONSTRUCTION PRODUCTS·Filed 1993·Granted Jan 10, 1995·60 cites·12 claims
- 0388US5124109AMethod for producing a double wall pipeCONTECH CONSTRUCTION PRODUCTS·Filed 1990·Granted Jun 23, 1992·76 cites·9 claims
- 0483US4702502AGasket for making joints in corrugated plastic pipeCONTECH CONSTRUCTION PRODUCTS·Filed 1985·Granted Oct 27, 1987·58 cites·18 claims
- 0582US4846660AApparatus for producing double wall pipeCONTECH CONSTRUCTION PRODUCTS·Filed 1985·Granted Jul 11, 1989·54 cites·7 claims
- 0671US7574886B2Apparatus for producing helically corrugated metal pipe and related methodCONTECH CONSTRUCTION PRODUCTS·Filed 2008·Granted Aug 18, 2009·2 cites·9 claims
- 0769US7404308B2Apparatus for producing helically corrugated metal pipe and related methodCONTECH CONSTRUCTION PRODUCTS·Filed 2006·Granted Jul 29, 2008·2 cites·8 claims
- 0869US5707088AJoint for coupling plastic corrugated pipesCONTECH CONSTRUCTION PRODUCTS·Filed 1995·Granted Jan 13, 1998·28 cites·16 claims
- 0957US5842727ACoupling for spiral corrugated pipeCONTECH CONSTRUCTION PRODUCTS·Filed 1997·Granted Dec 1, 1998·23 cites·20 claims
- 1051US6994381B1Stab joint couplingCONTECH CONSTRUCTION PRODUCTS·Filed 2000·Granted Feb 7, 2006·15 cites·30 claims
- 1148US5862581AMethod for making a joint for a corrugated pipe segmentCONTECH CONSTRUCTION PRODUCTS·Filed 1996·Granted Jan 26, 1999·12 cites·17 claims
- 1244US4865357AMetal pipe coupling to accommodate a desired angle of connection between drainage pipe sectionsCONTECH CONSTRUCTION PRODUCTS·Filed 1988·Granted Sep 12, 1989·15 cites·10 claims
- 1343US4974440ASelf propelled internal pipe arching apparatusCONTECH CONSTRUCTION PRODUCTS·Filed 1989·Granted Dec 4, 1990·12 cites·2 claims
- 1440US5383693AGaskets used in joining corrugated pipeCONTECH CONSTRUCTION PRODUCTS·Filed 1992·Granted Jan 24, 1995·12 cites·8 claims
- 1538US4914939ASelf propelled internal pipe arching apparatusCONTECH CONSTRUCTION PRODUCTS·Filed 1988·Granted Apr 10, 1990·10 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →