Assignee
HELIX TECH CORP
US·151 granted patents·2 pending applications·4,806 citations·filing 1976–2004
Top patents by PatentIndex Score
153 records- 0196US5443368ATurbomolecular pump with valves and integrated electronic controlsHELIX TECH CORP·Filed 1993·Granted Aug 22, 1995·133 cites·28 claims
- 0296US5018357ATemperature control system for a cryogenic refrigerationHELIX TECH CORP·Filed 1990·Granted May 28, 1991·122 cites·10 claims
- 0396US4918930AElectronically controlled cryopumpHELIX TECH CORP·Filed 1988·Granted Apr 24, 1990·103 cites·43 claims
- 0495US6318093B2Electronically controlled cryopumpHELIX TECH CORP·Filed 2001·Granted Nov 20, 2001·61 cites·8 claims
- 0595US4796433ARemote recondenser with intermediate temperature heat sinkHELIX TECH CORP·Filed 1988·Granted Jan 10, 1989·68 cites·28 claims
- 0694US5176004AElectronically controlled cryopump and network interfaceHELIX TECH CORP·Filed 1991·Granted Jan 5, 1993·120 cites·10 claims
- 0793US6902378B2Electronically controlled vacuum pumpHELIX TECH CORP·Filed 2002·Granted Jun 7, 2005·49 cites·14 claims
- 0893US5265431AElectronically controlled cryopump and network interfaceHELIX TECH CORP·Filed 1992·Granted Nov 30, 1993·108 cites·6 claims
- 0993US4644851ALinear motor compressor with clearance seals and gas bearingsHELIX TECH CORP·Filed 1985·Granted Feb 24, 1987·100 cites·6 claims
- 1092US6865952B2Apparatus and methods for heat loss pressure measurementHELIX TECH CORP·Filed 2004·Granted Mar 15, 2005·36 cites·15 claims
- 1192US6022195AElectronically controlled vacuum pump with control moduleHELIX TECH CORP·Filed 1995·Granted Feb 8, 2000·80 cites·17 claims
- 1291US6553841B1Pressure transducer assemblyHELIX TECH CORP·Filed 2000·Granted Apr 29, 2003·69 cites·27 claims
- 1391US5060481AMethod and apparatus for controlling a cryogenic refrigeration systemHELIX TECH CORP·Filed 1989·Granted Oct 29, 1991·57 cites·35 claims
- 1491US4766741ACryogenic recondenser with remote cold boxHELIX TECH CORP·Filed 1987·Granted Aug 30, 1988·58 cites·31 claims
- 1591US4545738ALinear motor compressor with clearance seals and gas bearingsHELIX TECH CORP·Filed 1984·Granted Oct 8, 1985·67 cites·16 claims
- 1691US4438632AMeans for periodic desorption of a cryopumpHELIX TECH CORP·Filed 1982·Granted Mar 27, 1984·48 cites·7 claims
- 1790US4763483ACryopump and method of starting the cryopumpHELIX TECH CORP·Filed 1986·Granted Aug 16, 1988·83 cites·27 claims
- 1889US5450316AElectronic process controller having password overrideHELIX TECH CORP·Filed 1994·Granted Sep 12, 1995·60 cites·10 claims
- 1989US5146124ALinear drive motor with flexible couplingHELIX TECH CORP·Filed 1991·Granted Sep 8, 1992·63 cites·37 claims
- 2089US4697113AMagnetically balanced and centered electromagnetic machine and cryogenic refrigerator employing sameHELIX TECH CORP·Filed 1985·Granted Sep 29, 1987·71 cites·28 claims
- 2189US4543793AElectronic control of cryogenic refrigeratorsHELIX TECH CORP·Filed 1984·Granted Oct 1, 1985·92 cites·21 claims
- 2288US4574591AClearance seals and piston for cryogenic refrigerator compressorsHELIX TECH CORP·Filed 1983·Granted Mar 11, 1986·49 cites·12 claims
- 2387US6658941B1Apparatus and methods for heat loss pressure measurementHELIX TECH CORP·Filed 2000·Granted Dec 9, 2003·30 cites·16 claims
- 2487US5900822ACryopump synchronous motor load monitorHELIX TECH CORP·Filed 1997·Granted May 4, 1999·60 cites·2 claims
- 2587US5157928AElectronically controlled cryopumpHELIX TECH CORP·Filed 1991·Granted Oct 27, 1992·61 cites·27 claims
- 2687US4679401ATemperature control of cryogenic systemsHELIX TECH CORP·Filed 1985·Granted Jul 14, 1987·64 cites·30 claims
- 2787US4449373AReduced vacuum cryopumpHELIX TECH CORP·Filed 1983·Granted May 22, 1984·41 cites·8 claims
- 2886US4494381ACryopump with improved adsorption capacityHELIX TECH CORP·Filed 1983·Granted Jan 22, 1985·38 cites·11 claims
- 2985US4577465AOil free vacuum systemHELIX TECH CORP·Filed 1984·Granted Mar 25, 1986·36 cites·22 claims
- 3084US6198105B1Miniature ionization gauge utilizing multiple ion collectorsHELIX TECH CORP·Filed 2000·Granted Mar 6, 2001·17 cites·7 claims
- 3184US4761960ACryogenic refrigeration system having an involute laminated stator for its linear drive motorHELIX TECH CORP·Filed 1986·Granted Aug 9, 1988·46 cites·23 claims
- 3284US4718240ACryopump regeneration method and apparatusHELIX TECH CORP·Filed 1987·Granted Jan 12, 1988·40 cites·10 claims
- 3384US4546613ACryopump with rapid cooldown and increased pressureHELIX TECH CORP·Filed 1984·Granted Oct 15, 1985·45 cites·14 claims
- 3483US5517823APressure controlled cryopump regeneration method and systemHELIX TECH CORP·Filed 1995·Granted May 21, 1996·53 cites·19 claims
- 3583US5375424ACryopump with electronically controlled regenerationHELIX TECH CORP·Filed 1993·Granted Dec 27, 1994·50 cites·34 claims
- 3683US4545209ACryogenic refrigeration system with linear drive motorsHELIX TECH CORP·Filed 1983·Granted Oct 8, 1985·37 cites·14 claims
- 3783US4356701ACryopumpHELIX TECH CORP·Filed 1981·Granted Nov 2, 1982·35 cites·11 claims
- 3883US4267701AHelium liquefaction plantHELIX TECH CORP·Filed 1979·Granted May 19, 1981·59 cites·10 claims
- 3982US6799468B2Apparatus and methods for heat loss pressure measurementHELIX TECH CORP·Filed 2003·Granted Oct 5, 2004·22 cites·35 claims
- 4082US6272400B1Vacuum network controllerHELIX TECH CORP·Filed 1998·Granted Aug 7, 2001·96 cites·45 claims
- 4182US4718241ACryopump with quicker adsorptionHELIX TECH CORP·Filed 1987·Granted Jan 12, 1988·40 cites·10 claims
- 4282US4555907ACryopump with improved second stage arrayHELIX TECH CORP·Filed 1984·Granted Dec 3, 1985·39 cites·16 claims
- 4382US4446702AMultiport cryopumpHELIX TECH CORP·Filed 1983·Granted May 8, 1984·33 cites·11 claims
- 4480US6945119B2Apparatus and methods for heat loss pressure measurementHELIX TECH CORP·Filed 2004·Granted Sep 20, 2005·17 cites·18 claims
- 4580US6046456AMiniature ionization gauge utilizing multiple ion collectorsHELIX TECH CORP·Filed 1999·Granted Apr 4, 2000·26 cites·1 claims
- 4680US5343708AElectronically controlled cryopumpHELIX TECH CORP·Filed 1992·Granted Sep 6, 1994·36 cites·8 claims
- 4780US4862697ACryopump with vibration isolationHELIX TECH CORP·Filed 1988·Granted Sep 5, 1989·37 cites·17 claims
- 4879US6227056B1Methods of pressure measurementHELIX TECH CORP·Filed 1999·Granted May 8, 2001·34 cites·11 claims
- 4979US4244192ARefrigeration system and reciprocating compressor therefor with pressure stabilizing sealHELIX TECH CORP·Filed 1978·Granted Jan 13, 1981·32 cites·5 claims
- 5078US5228299ACryopump water drainHELIX TECH CORP·Filed 1992·Granted Jul 20, 1993·45 cites·20 claims
Showing the top 50 of 153 patent records by PatentIndex Score.
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