Assignee
AMTROL INC
US·45 granted patents·1,461 citations·filing 1977–2006
Top patents by PatentIndex Score
45 records- 0195US4284097AIn line back flow preventerAMTROL INC·Filed 1979·Granted Aug 18, 1981·126 cites·12 claims
- 0292US7287663B2Lined pressure vessel and connector thereforAMTROL INC·Filed 2005·Granted Oct 30, 2007·35 cites·23 claims
- 0389US7255245B2Hybrid pressure vessel with separable jacketAMTROL INC·Filed 2005·Granted Aug 14, 2007·34 cites·17 claims
- 0489US7216673B2Non-metallic expansion tank with internal diaphragm and clamping device for sameAMTROL INC·Filed 2005·Granted May 15, 2007·25 cites·26 claims
- 0589US6386384B1Full jacket gas cylinderAMTROL INC·Filed 2000·Granted May 14, 2002·64 cites·13 claims
- 0689US5386925AExpansion tankAMTROL INC·Filed 1993·Granted Feb 7, 1995·71 cites·2 claims
- 0788US4232704AIn line back flow preventerAMTROL INC·Filed 1978·Granted Nov 11, 1980·73 cites·17 claims
- 0887US5778679AMethod and apparatus for increasing acceptance and adjusting the rate of pressure variations within a prespecified range in precharged fluid storage systemsAMTROL INC·Filed 1996·Granted Jul 14, 1998·43 cites·40 claims
- 0984USD268315SPlural leg support unit for a water tank or similar articleAMTROL INC·Filed 1980·Granted Mar 22, 1983·20 cites·1 claims
- 1084US4299248ADiaphragm valve air vent device for water systemsAMTROL INC·Filed 1979·Granted Nov 10, 1981·38 cites·9 claims
- 1182US4573611ANon-refillable valveAMTROL INC·Filed 1984·Granted Mar 4, 1986·41 cites·11 claims
- 1282US4471907AVenturi pressurizer for incompressible-liquid circulating systemsAMTROL INC·Filed 1981·Granted Sep 18, 1984·34 cites·18 claims
- 1382US4241843ALined metal tank with heat shield and method of making sameAMTROL INC·Filed 1979·Granted Dec 30, 1980·36 cites·14 claims
- 1481US5551590ANon-metallic pressure vessel fittingAMTROL INC·Filed 1995·Granted Sep 3, 1996·71 cites·13 claims
- 1578US5657790AValves for pressurized containersAMTROL INC·Filed 1995·Granted Aug 19, 1997·47 cites·42 claims
- 1677US4555253AGas-liquid vortex separator-eliminatorAMTROL INC·Filed 1984·Granted Nov 26, 1985·43 cites·17 claims
- 1777US4344645ATee-type leg bracketAMTROL INC·Filed 1980·Granted Aug 17, 1982·43 cites·19 claims
- 1876USD559348SHandle for a portable gas cylinderAMTROL INC·Filed 2006·Granted Jan 8, 2008·9 cites·1 claims
- 1976US7032628B2Mobile prepressurized diaphragm type fluid storage tankAMTROL INC·Filed 2004·Granted Apr 25, 2006·22 cites·17 claims
- 2076US4921004APiercing surge regulator valve and apparatusAMTROL INC·Filed 1989·Granted May 1, 1990·32 cites·3 claims
- 2174US4836409AIntegral diaphragm-liner bladder for hydropneumatic tankAMTROL INC·Filed 1988·Granted Jun 6, 1989·38 cites·13 claims
- 2272US7100683B2In-well aeration deviceAMTROL INC·Filed 2004·Granted Sep 5, 2006·22 cites·25 claims
- 2371US7048861B2System and method for in-well aerationAMTROL INC·Filed 2003·Granted May 23, 2006·16 cites·20 claims
- 2470US5758820AHeat recovery systemAMTROL INC·Filed 1997·Granted Jun 2, 1998·45 cites·52 claims
- 2570US4971097AFreeze-proof hydrantAMTROL INC·Filed 1989·Granted Nov 20, 1990·29 cites·23 claims
- 2670US4813575ANon-refillable valve for pressurized containersAMTROL INC·Filed 1987·Granted Mar 21, 1989·31 cites·11 claims
- 2770US4403385AProcess of preparing a double wall heat exchangerAMTROL INC·Filed 1981·Granted Sep 13, 1983·23 cites·4 claims
- 2866US4165951AWater pressure booster system and control valve thereforAMTROL INC·Filed 1977·Granted Aug 28, 1979·24 cites·21 claims
- 2965US6957799B2Valve for a non-refillable pressurized containerAMTROL INC·Filed 2003·Granted Oct 25, 2005·14 cites·20 claims
- 3065US5295502ANon-refillable valveAMTROL INC·Filed 1993·Granted Mar 22, 1994·25 cites·10 claims
- 3165US5036876ANon-refillable cylinder valve for returnable cylindersAMTROL INC·Filed 1990·Granted Aug 6, 1991·35 cites·16 claims
- 3264US5794660AValves for pressurized containersAMTROL INC·Filed 1997·Granted Aug 18, 1998·28 cites·12 claims
- 3364US4475932AGas-liquid vortex separator-eliminatorAMTROL INC·Filed 1983·Granted Oct 9, 1984·25 cites·10 claims
- 3463US4921214ANon-refillable packless valve for pressurized containersAMTROL INC·Filed 1989·Granted May 1, 1990·22 cites·10 claims
- 3563US4207915ABack flow preventerAMTROL INC·Filed 1977·Granted Jun 17, 1980·17 cites·10 claims
- 3662USD460519SHandleAMTROL INC·Filed 2000·Granted Jul 16, 2002·14 cites·1 claims
- 3762US4313400ALined metal tank with heat shield, indirect fired water heater and method of making sameAMTROL INC·Filed 1980·Granted Feb 2, 1982·28 cites·11 claims
- 3860US5012833AFreeze-proof hydrantAMTROL INC·Filed 1990·Granted May 7, 1991·22 cites·11 claims
- 3958US4546819ADouble wall heat exchangerAMTROL INC·Filed 1984·Granted Oct 15, 1985·18 cites·18 claims
- 4058US4456456AHot-water heating system having an air eliminatorAMTROL INC·Filed 1982·Granted Jun 26, 1984·16 cites·9 claims
- 4155US4420010AIn-line back flow preventerAMTROL INC·Filed 1980·Granted Dec 13, 1983·14 cites·2 claims
- 4254US5111879ASanitary locking lip split well sealAMTROL INC·Filed 1990·Granted May 12, 1992·32 cites·4 claims
- 4342US5691406AUniversal EPDM/butyl compound for use as an elastomeric barrier in water storage and treatment systems and the likeAMTROL INC·Filed 1996·Granted Nov 25, 1997·9 cites·27 claims
- 4434US4597559ADiaphragm valveAMTROL INC·Filed 1985·Granted Jul 1, 1986·5 cites·11 claims
- 4528US4688694ASafety means for pressurized gas containersAMTROL INC·Filed 1986·Granted Aug 25, 1987·2 cites·29 claims
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