Inventor · disambiguated record
Joseph H. Heffner
Also filed as: HEFFNER JOSEPH H
11 granted patents·384 citations·filing 1989–1999
92Inventor score
Files withSPORLAN VALVE CO11
Top patents by PatentIndex Score
11 records- 0196US6125642AOil level control systemSPORLAN VALVE CO·Filed 1999·Granted Oct 3, 2000·193 cites·14 claims
- 0279US5832744ADistributor for refrigeration systemSPORLAN VALVE CO·Filed 1996·Granted Nov 10, 1998·54 cites·16 claims
- 0362US5038827AShuttle valve for a refrigeration systemSPORLAN VALVE CO·Filed 1990·Granted Aug 13, 1991·27 cites·10 claims
- 0454US4982578ARefrigerant purge valveSPORLAN VALVE CO·Filed 1989·Granted Jan 8, 1991·14 cites·8 claims
- 0553US5423480ADual capacity thermal expansion valveSPORLAN VALVE CO·Filed 1993·Granted Jun 13, 1995·21 cites·12 claims
- 0647US5524819AExpansion and check valve combinationSPORLAN VALVE CO·Filed 1994·Granted Jun 11, 1996·17 cites·3 claims
- 0747US4964567AExpansion and check valve combinationSPORLAN VALVE CO·Filed 1989·Granted Oct 23, 1990·17 cites·9 claims
- 0843US5277364ADual capacity thermal expansion valveSPORLAN VALVE CO·Filed 1992·Granted Jan 11, 1994·14 cites·7 claims
- 0936US5065595AThermostatic expansion valveSPORLAN VALVE CO·Filed 1990·Granted Nov 19, 1991·9 cites·6 claims
- 1035US5232015AExpansion valve with inlet strainerSPORLAN VALVE CO·Filed 1992·Granted Aug 3, 1993·8 cites·3 claims
- 1135US5148684AInjection valve for a refrigeration systemSPORLAN VALVE CO·Filed 1991·Granted Sep 22, 1992·10 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →