Assignee
CENTRAL PLASTICS CO
US·18 granted patents·1 pending application·550 citations·filing 1980–2006
Top patents by PatentIndex Score
19 records- 0186US4642155AThermoplastic fitting electric heat welding method and apparatusCENTRAL PLASTICS CO·Filed 1986·Granted Feb 10, 1987·71 cites·15 claims
- 0284US4894521AElectric heating element for fusing thermoplastic materialsCENTRAL PLASTICS CO·Filed 1988·Granted Jan 16, 1990·53 cites·15 claims
- 0382US5252157AElectrothermal fusion of large diameter pipes by electric heating wire wrapping and sleeve connectorCENTRAL PLASTICS CO·Filed 1993·Granted Oct 12, 1993·44 cites·7 claims
- 0478US4684789AThermoplastic fitting electric welding method and apparatusCENTRAL PLASTICS CO·Filed 1986·Granted Aug 4, 1987·54 cites·17 claims
- 0577US5988689AHeat-shrinkable electrofusion fittings and methodsCENTRAL PLASTICS CO·Filed 1997·Granted Nov 23, 1999·46 cites·21 claims
- 0675US4602148AThermoplastic fitting electric heat welding method and apparatusCENTRAL PLASTICS CO·Filed 1985·Granted Jul 22, 1986·42 cites·8 claims
- 0770US4713129APlastic pile protector and method of covering a pile with sameCENTRAL PLASTICS CO·Filed 1983·Granted Dec 15, 1987·29 cites·2 claims
- 0868US5476562ALarge diameter electrically fusible pipe methodsCENTRAL PLASTICS CO·Filed 1994·Granted Dec 19, 1995·24 cites·5 claims
- 0965US4663794APlastic pipe scraperCENTRAL PLASTICS CO·Filed 1985·Granted May 12, 1987·27 cites·3 claims
- 1063US4708527APlastic pile protector and method of covering a pile with sameCENTRAL PLASTICS CO·Filed 1987·Granted Nov 24, 1987·24 cites·6 claims
- 1159US4978837AMethod and apparatus for electrically heat welding thermoplastic fittingsCENTRAL PLASTICS CO·Filed 1990·Granted Dec 18, 1990·27 cites·26 claims
- 1257US6896297B2Gas service riser assembly and ductile pipe to plastic pipe transition connectionCENTRAL PLASTICS CO·Filed 2003·Granted May 24, 2005·9 cites·24 claims
- 1353US5798021AClamping apparatus for an electrofusion jointCENTRAL PLASTICS CO·Filed 1996·Granted Aug 25, 1998·18 cites·14 claims
- 1449US4801159AAnodeless riser assemblyCENTRAL PLASTICS CO·Filed 1987·Granted Jan 31, 1989·25 cites·14 claims
- 1547US5988692AMetal to plastic pipe transition fittingCENTRAL PLASTICS CO·Filed 1998·Granted Nov 23, 1999·20 cites·15 claims
- 1643US4631107AThermoplastic fitting electric heat welding apparatusCENTRAL PLASTICS CO·Filed 1986·Granted Dec 23, 1986·13 cites·6 claims
- 1737US2007176413A1Corrosion resistant gas service riser assemblyCENTRAL PLASTICS CO·Filed 2006·Application pending·0 cites
- 1835US5895543AClamping apparatus for an electrofusion jointCENTRAL PLASTICS CO·Filed 1998·Granted Apr 20, 1999·8 cites·6 claims
- 1935US4343518ARod guide apparatusCENTRAL PLASTICS CO·Filed 1980·Granted Aug 10, 1982·16 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →