Inventor
Carl T. Crawford
Inventor
Hickory Creek, TX, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F25Bprimary
F25BRefrigeration machines, plants or systems25%
Y10TTechnical subjects covered by former us classification20%
F04DNon-positive-displacement pumps15%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications15%
G05BControl or regulating systems in general10%
G05DSystems for controlling or regulating non-electric variables10%
F24FAir-conditioning5%
PatentTitleYear
10,816,232Systems and methods for pumping down flammable refrigerant202010,704,816Liquid transfer pump cycle202010,519,981Ice deflector for a fan housing20199,909,596'Ice deflector for a fan housing'20189,874,381Method to control electronic expansion valve20189,829,012Ice deflector for a fan housing20179,151,526'Method to control electronic expansion valve'20158,549,867'Heat pump control system using passive defrost'2013Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2013–2020Patents assigned to LENNOX IND INC (8)· patent assignee history
2013Patents assigned to CRAWFORD CARL T (1)· patent assignee history
2013Patents assigned to PERKINS BRUCE (1)· patent assignee history
2013–2020Based in Hickory Creek, TX, US· patent location history
2015Patents assigned to CRAWFORD CARL (1)· patent assignee history
2015Patents assigned to QU YI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LENNOX IND INC | 8 | 2013–2020 |
| CRAWFORD CARLself | 1 | 2015 |
| CRAWFORD CARL Tself | 1 | 2013 |
| PERKINS BRUCE | 1 | 2013 |
| QU YI | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hickory Creek, Texas, US | 8 | 2013–2020 |