Patent US3362458A successfully refreshed from Google Patents.
US3362458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange method in crystallization
Assignee: Honeywell UOP LLC
•
Filing: 1965-06-21
•
Granted: 1968-01-09
•
Expires: 1985-06-21
Abstract
No abstract record available.
Inventors
- 👤 Cecil M Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:53
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0036; Y; Y10; Y10S; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN THE PROCESS OF EVAPORATING A BODY OF AQUEOUS LIQUID MAINTAINED IN A CLOSED VESSEL AND WHEREIN SAID BODY IS AT LEAST IN PART HEATED BY CIRCULATING AT LEAST PORTION THEREOF THROUGH A TUBULAR HEAT ECHANGER, THE IMPROVEMENT WHICH COMPRISES WITHDRAWING VAPOR FROM SAID CLOSED VESSEL, COMPRESSING SAID VAPOR, AND INTRODUCING THE COMPRESSED VAPOR INTO SAID HEAT EXCHANGER ON THE HEAT INPUT SIDE THEREOF WHILE FLOWING SATURATED FILMS OF ELECTROLYTE SOLUTION OVER THE HEAT INPUT SURFACES OF THE TUBES IN SAID HEAT EXCHANGER, SAID VAPOR BEING COMPRESSED TO A PRESSURE EXCEEDING THE MAXIMUM VAPOR PRESSURE OF SAID FILMS OF ELECTROLYTE SOLUTION AND TO A TEMPEARTURE LESS THAN THE MAXIMUM TEMPERATURE OF SAID FILMS WHEREBY SAID COMPRESSED VAPOR CONDENSES IN SAID FILMS AND MAINTAINS THE TEMPERATURE THEREOF.
Claim 2
Dependent Claim
126 words
IN THE PROCESS OF EVAPORATING A BODY OF AQUEOUS LIQUID MAINTAINED IN A CLOSED VESSEL AND WHEREIN SAID BODY IS AT LEAST IN PART HEATED BY CIRCULATING AT LEAST PORTION THEREOF THROUGH A TUBULAR HEAT ECHANGER, THE IMPROVEMENT WHICH COMPRISES WITHDRAWING VAPOR FROM SAID CLOSED VESSEL, COMPRESSING SAID VAPOR, AND INTRODUCING THE COMPRESSED VAPOR INTO SAID HEAT EXCHANGER ON THE HEAT INPUT SIDE THEREOF WHILE FLOWING SATURATED FILMS OF ELECTROLYTE SOLUTION OVER THE HEAT INPUT SURFACES OF THE TUBES IN SAID HEAT EXCHANGER, SAID VAPOR BEING COMPRESSED TO A PRESSURE EXCEEDING THE MAXIMUM VAPOR PRESSURE OF SAID FILMS OF ELECTROLYTE SOLUTION AND TO A TEMPEARTURE LESS THAN THE MAXIMUM TEMPERATURE OF SAID FILMS WHEREBY SAID COMPRESSED VAPOR CONDENSES IN SAID FILMS AND MAINTAINS THE TEMPERATURE THEREOF.
References Cited (Backward Citations)
US440231A
Cited
GB152753A
Cited
US1481723A
Cited
US1536894A
Cited
US2295088A
Cited
US2775097A
Cited
US2795115A
Cited
US3190817A
Cited
US3203875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |