Assignee
KEROTEST MFG CORP
US·24 granted patents·589 citations·filing 1974–1997
Top patents by PatentIndex Score
24 records- 0195US4526341APneumatic shut-off valveKEROTEST MFG CORP·Filed 1983·Granted Jul 2, 1985·68 cites·11 claims
- 0288US4511120APlastic service valveKEROTEST MFG CORP·Filed 1983·Granted Apr 16, 1985·53 cites·24 claims
- 0383US4369813APipe stopper method and apparatusKEROTEST MFG CORP·Filed 1981·Granted Jan 25, 1983·49 cites·20 claims
- 0479US4348006APlastic valve assemblyKEROTEST MFG CORP·Filed 1981·Granted Sep 7, 1982·40 cites·20 claims
- 0573US4398754AElectrically insulated pipe coupling and method for making the sameKEROTEST MFG CORP·Filed 1980·Granted Aug 16, 1983·45 cites·12 claims
- 0672US5639394AElectrofusion formed valve assemblyKEROTEST MFG CORP·Filed 1995·Granted Jun 17, 1997·32 cites·20 claims
- 0772US4231549AValve stem and valve disc connection for a diaphragm valveKEROTEST MFG CORP·Filed 1978·Granted Nov 4, 1980·29 cites·10 claims
- 0871US5586749AComposite polyethylene and transition valveKEROTEST MFG CORP·Filed 1994·Granted Dec 24, 1996·34 cites·11 claims
- 0969US4465260APlastic valve and improved actuator thereforKEROTEST MFG CORP·Filed 1982·Granted Aug 14, 1984·25 cites·19 claims
- 1069US3982729ABack-up seal for diaphragm valveKEROTEST MFG CORP·Filed 1974·Granted Sep 28, 1976·23 cites·9 claims
- 1161US4988077AReinforced plastic valveKEROTEST MFG CORP·Filed 1990·Granted Jan 29, 1991·24 cites·2 claims
- 1252US4462422ABellows sealed stem for rotary valveKEROTEST MFG CORP·Filed 1982·Granted Jul 31, 1984·16 cites·12 claims
- 1352US4354666AHigh pressure packless metal diaphragm valveKEROTEST MFG CORP·Filed 1980·Granted Oct 19, 1982·18 cites·15 claims
- 1451US4513779AMetering valveKEROTEST MFG CORP·Filed 1983·Granted Apr 30, 1985·15 cites·16 claims
- 1549US5100103AReinforced plastic valveKEROTEST MFG CORP·Filed 1991·Granted Mar 31, 1992·15 cites·2 claims
- 1647US5154396AReinforced plastic valveKEROTEST MFG CORP·Filed 1991·Granted Oct 13, 1992·15 cites·4 claims
- 1746US4468002AActuator mechanism for double bent bellows sealed rotary valveKEROTEST MFG CORP·Filed 1982·Granted Aug 28, 1984·11 cites·11 claims
- 1844US4151979ADiaphragm valve having a Belleville-spring assemblyKEROTEST MFG CORP·Filed 1977·Granted May 1, 1979·11 cites·1 claims
- 1943US4452426ABent bellows sealed rotary valveKEROTEST MFG CORP·Filed 1982·Granted Jun 5, 1984·12 cites·11 claims
- 2040US4546662AActuator mechanism for double bent bellows sealed rotary valveKEROTEST MFG CORP·Filed 1984·Granted Oct 15, 1985·8 cites·11 claims
- 2139US4488741ACompression coupling for service valveKEROTEST MFG CORP·Filed 1983·Granted Dec 18, 1984·8 cites·4 claims
- 2238US5951902AMethod and apparatus for electrofusing thermoplasticKEROTEST MFG CORP·Filed 1997·Granted Sep 14, 1999·24 cites·20 claims
- 2336US4516754ABent bellows sealed rotary valveKEROTEST MFG CORP·Filed 1984·Granted May 14, 1985·8 cites·11 claims
- 2435US4540019ABellows sealed stem for rotary valveKEROTEST MFG CORP·Filed 1984·Granted Sep 10, 1985·6 cites·12 claims
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