Assignee
SPORLAN VALVE CO
US·30 granted patents·1,035 citations·filing 1976–2002
Top patents by PatentIndex Score
30 records- 0196US6125642AOil level control systemSPORLAN VALVE CO·Filed 1999·Granted Oct 3, 2000·193 cites·14 claims
- 0296US4448038ARefrigeration control system for modulating electrically-operated expansion valvesSPORLAN VALVE CO·Filed 1982·Granted May 15, 1984·102 cites·2 claims
- 0388US5364066ADual port valve with stepper motor actuatorSPORLAN VALVE CO·Filed 1993·Granted Nov 15, 1994·98 cites·12 claims
- 0481US4442680APilot-operated pressure regulator valveSPORLAN VALVE CO·Filed 1982·Granted Apr 17, 1984·41 cites·4 claims
- 0579US5832744ADistributor for refrigeration systemSPORLAN VALVE CO·Filed 1996·Granted Nov 10, 1998·54 cites·16 claims
- 0679US4852364AExpansion and check valve combinationSPORLAN VALVE CO·Filed 1987·Granted Aug 1, 1989·51 cites·11 claims
- 0779US4362027ARefrigeration control system for modulating electrically-operated expansion valvesSPORLAN VALVE CO·Filed 1979·Granted Dec 7, 1982·37 cites·2 claims
- 0878US6568656B1Flow control valve with lateral port balancingSPORLAN VALVE CO·Filed 1998·Granted May 27, 2003·55 cites·7 claims
- 0975US5440898AFilter-dryer unitSPORLAN VALVE CO·Filed 1994·Granted Aug 15, 1995·41 cites·20 claims
- 1069US4320000ABidirectional flow filter-drierSPORLAN VALVE CO·Filed 1980·Granted Mar 16, 1982·33 cites·5 claims
- 1168US4029580ABidirectional flow filter-drierSPORLAN VALVE CO·Filed 1976·Granted Jun 14, 1977·23 cites·10 claims
- 1266US6835235B2Molded core filter drier with filter media molded to core for use in heat pump systemsSPORLAN VALVE CO·Filed 2002·Granted Dec 28, 2004·20 cites·13 claims
- 1366US4227901AFilter-drier for heat pump systemsSPORLAN VALVE CO·Filed 1978·Granted Oct 14, 1980·23 cites·1 claims
- 1465US4425767ARefrigeration control system for modulating electrically-operated expansion valvesSPORLAN VALVE CO·Filed 1982·Granted Jan 17, 1984·25 cites·9 claims
- 1564US4911404AElectronically operated expansion valveSPORLAN VALVE CO·Filed 1989·Granted Mar 27, 1990·30 cites·12 claims
- 1664US4104044ABidirectional flow filter-drier assemblySPORLAN VALVE CO·Filed 1977·Granted Aug 1, 1978·17 cites·4 claims
- 1762US5038827AShuttle valve for a refrigeration systemSPORLAN VALVE CO·Filed 1990·Granted Aug 13, 1991·27 cites·10 claims
- 1858US6835236B2Molded core filter drier with filter media molded to coreSPORLAN VALVE CO·Filed 2002·Granted Dec 28, 2004·9 cites·15 claims
- 1954US4982578ARefrigerant purge valveSPORLAN VALVE CO·Filed 1989·Granted Jan 8, 1991·14 cites·8 claims
- 2053US5423480ADual capacity thermal expansion valveSPORLAN VALVE CO·Filed 1993·Granted Jun 13, 1995·21 cites·12 claims
- 2147US5524819AExpansion and check valve combinationSPORLAN VALVE CO·Filed 1994·Granted Jun 11, 1996·17 cites·3 claims
- 2247US4964567AExpansion and check valve combinationSPORLAN VALVE CO·Filed 1989·Granted Oct 23, 1990·17 cites·9 claims
- 2343US5277364ADual capacity thermal expansion valveSPORLAN VALVE CO·Filed 1992·Granted Jan 11, 1994·14 cites·7 claims
- 2441US4978062AThermostatic expansion valve with bi-directional flowSPORLAN VALVE CO·Filed 1990·Granted Dec 18, 1990·14 cites·10 claims
- 2539US6852150B2Molded core filter drierSPORLAN VALVE CO·Filed 2002·Granted Feb 8, 2005·2 cites·10 claims
- 2637US5238219AThermostatic expansion valveSPORLAN VALVE CO·Filed 1992·Granted Aug 24, 1993·12 cites·11 claims
- 2737US4750334ABalanced thermostatic expansion valve for refrigeration systemsSPORLAN VALVE CO·Filed 1987·Granted Jun 14, 1988·18 cites·9 claims
- 2836US5065595AThermostatic expansion valveSPORLAN VALVE CO·Filed 1990·Granted Nov 19, 1991·9 cites·6 claims
- 2935US5232015AExpansion valve with inlet strainerSPORLAN VALVE CO·Filed 1992·Granted Aug 3, 1993·8 cites·3 claims
- 3035US5148684AInjection valve for a refrigeration systemSPORLAN VALVE CO·Filed 1991·Granted Sep 22, 1992·10 cites·7 claims
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