Inventor · disambiguated record
Douglas A. Collings
Also filed as: COLLINGS DOUGLAS A
5 granted patents·55 citations·filing 1999–2005
80Inventor score
Top patents by PatentIndex Score
5 records- 0174US7178362B2Expansion device arrangement for vapor compression systemTECUMSEH PRODUCTS CORMPANY·Filed 2005·Granted Feb 20, 2007·12 cites·18 claims
- 0270US7175400B2Compressor assembly with reciprocating piston and vented cylinderTECUMSEH PRODUCTS CO·Filed 2003·Granted Feb 13, 2007·13 cites·18 claims
- 0361US6368085B1Suction valve with variable slot widthTECUMSEH PRODUCTS CO·Filed 2000·Granted Apr 9, 2002·8 cites·23 claims
- 0456US7273355B2Compressor assembly with piston having multiple cross sectionsTECUMSEH PRODUCTS CO·Filed 2003·Granted Sep 25, 2007·6 cites·19 claims
- 0555US6176688B1Discharge muffler arrangementTECUMSEH PRODUCTS CO·Filed 1999·Granted Jan 23, 2001·16 cites·36 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →