US2630686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system containing novel refrigerant
Assignee: Carrier Corp
•
Filing: 1951-03-13
•
Granted: 1953-03-10
•
Expires: 1971-03-13
Abstract
No abstract record available.
Inventors
- 👤 Reed Winston Harrison
- 👤 Pennington William Alvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:56
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K2205/00; C09K2205/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
IN A REFRIGERATION SYSTEM EMPLOYING A POSITIVE DISPLACEMENT COMPRESSOR, A REFRIGERANT CONSISTING OF A MIXTURE OF SYMMETRICAL DICHLOROTETRAFLUOROETHANE AND MONOFLUORODICHLOROMETHANE HAVING A PRESSURE AT A PREDETERMINED TEMPERATURE GREATER THAN THE PRESSURE OF EITHER COMPONENT AT SUCH TEMPERATURE.
Claim 2
Dependent Claim
37 words
IN A REFRIGERATION SYSTEM EMPLOYING A POSITIVE DISPLACEMENT COMPRESSOR, A REFRIGERANT CONSISTING OF A MIXTURE OF SYMMETRICAL DICHLOROTETRAFLUOROETHANE AND MONOFLUORODICHLOROMETHANE HAVING A PRESSURE AT A PREDETERMINED TEMPERATURE GREATER THAN THE PRESSURE OF EITHER COMPONENT AT SUCH TEMPERATURE.
References Cited (Backward Citations)
US2255584A
Cited
US2479259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |