Douglas A Collings
Inventor
Stats
- 5 US patents issued
- 5 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 5 US Patents Issued
- 5 US Applications Filed
- 47 Total Citation Count
- Jan 24, 2005 Most Recent Filing
- Oct 12, 1999 Earliest Filing
Work History
| Patent Owner | Applications Filed | Year |
|---|---|---|
| Tecumseh Products Company | 1
1 4 2 | 1999
2000 2003 2005 |
Inventor Addresses
| Address | Duration |
|---|---|
| Tecumseh, MI | Jan 23, 01 - Sep 25, 07 |
| Tecumseh, MI, US | Jun 16, 05 - Jul 27, 06 |
Technology Profile
| Technology | Matters | |
|---|---|---|
| F04B: | POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS | 4 |
| F25B: | REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS | 1 |
Patents / Publication
| Patents / Publication # | Year of Publication / Issued | Title | Citations |
|---|---|---|---|
| 7273355 | 2007 | Compressor assembly with piston having multiple cross sections | 5 |
| 7178362 | 2007 | Expansion device arrangement for vapor compression system | 7 |
| 7175400 | 2007 | Compressor assembly with reciprocating piston and vented cylinder | 8 |
| 2006/0162,377 | 2006 | Expansion device arrangement for vapor compression system | 3 |
| 2005/0129,542 | 2005 | Compressor assembly with piston having multiple cross sections | 0 |
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