USRE27074E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration process
Assignee: —
•
Filing: 1969-08-20
•
Granted: 1971-02-23
•
Expires: 1989-08-20
Abstract
Abstract A REFRIGERATION PROCESS COMPRISES EVAPORATING A REFRIGRERANT FROM AN ABSORBENT SATURATED WITH THE REGRIGERANT BY DIRECT CONTACT WITH A HEAT CARRIER WHICH IS READILY SEPARABLE FROM THE ABSORBER AND REFRIGERANT, THEREAFTER CONDENSING THE VAPORIZED REFRIGERANT BY HEAT EXCHANGE WITH A COLD CARRIER, THEN EVAPORATING THE REFRIGERANT CONDENSATE BY HEAT EXCHANGE WITH A MEDIUM TO BE COOLED WHICH IS READILY SEPARABLE FROM THE REFRIGERANT AND THEN SATURATING THE COOLED ABSORBENT WITH THE REFRIGERANT VAPORS AND RETURNING THE SATURATED ABSORBENT TO THE INTITIAL EVAPORATION STAGE.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:21
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |