US3299942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the concentration of liquids
Assignee: JACOBY PROCESS EQUIPMENT CO IN
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Filing: 1964-06-29
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Granted: 1967-01-24
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harold E Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:45
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/10; B; B01; B01D; B01D1/00; B01D1/26; Y; Y10; Y10S; Y10S423/00; Y10S423/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF CONCENTRATING DILUTE LIQUOR IN ORDER TO BURN THE SAME IN AN INDEPENDENT RECOVERY FURNACE FOR THE RECOVERY OF HEAT AND USABLE CHEMICALS THEREFROM, WHICH COMPRISES, INITIALLY CONCENTRATING SAID DILUTE LIQUOR TO AN INITIAL SUBSTANTIALLY DILUTE STAGE IN AN INDIRECT CONTACT EVAPORATOR BY HEAT TRANSFER THROUGH A HEATING SURFACE, THEREAFTER BRINGING SAID THUS PRODUCED INITIAL SUBSTANTIALLY DILUTE LIQUOR INTO DIRECT CONTACT WITH HOT FLUE GASES FROM SAID RECOVERY FURNACE AND THEREBY EVAPORATING SAID INITIALLY CONCENTRATED LIQUOR TO A FURTHER STAGE OF INTERMEDIATE CONCENTRATION, THEREAFTER, EVAPORATING IN AN INDIRECT CONTACT EVAPORATOR SAID THUS PRODUCED LIQUOR OF INTERMEDIATE CONCENTRATION IN A FINISHING STAGE, WHICH FOLLOWS SAID STAGE OF INTERMEDIATE CONCENTRATION, AND ON COMPLETION OF SAID FINISHING STAGE BURNING SAID FINALLY CONCENTRATED LIQUOR IN SAID INDEPENDENT RECOVERY FURNACE FOR THE RECOVERY OF HEAT AND CHEMICALS THEREFROM.
Claim 2
Independent Claim
135 words
THE METHOD OF CONCENTRATING DILUTE LIQUOR IN ORDER TO BURN THE SAME IN AN INDEPENDENT RECOVERY FURNACE FOR THE RECOVERY OF HEAT AND USABLE CHEMICALS THEREFROM, WHICH COMPRISES, INITIALLY CONCENTRATING SAID DILUTE LIQUOR TO AN INITIAL SUBSTANTIALLY DILUTE STAGE IN AN INDIRECT CONTACT EVAPORATOR BY HEAT TRANSFER THROUGH A HEATING SURFACE, THEREAFTER BRINGING SAID THUS PRODUCED INITIAL SUBSTANTIALLY DILUTE LIQUOR INTO DIRECT CONTACT WITH HOT FLUE GASES FROM SAID RECOVERY FURNACE AND THEREBY EVAPORATING SAID INITIALLY CONCENTRATED LIQUOR TO A FURTHER STAGE OF INTERMEDIATE CONCENTRATION, THEREAFTER, EVAPORATING IN AN INDIRECT CONTACT EVAPORATOR SAID THUS PRODUCED LIQUOR OF INTERMEDIATE CONCENTRATION IN A FINISHING STAGE, WHICH FOLLOWS SAID STAGE OF INTERMEDIATE CONCENTRATION, AND ON COMPLETION OF SAID FINISHING STAGE BURNING SAID FINALLY CONCENTRATED LIQUOR IN SAID INDEPENDENT RECOVERY FURNACE FOR THE RECOVERY OF HEAT AND CHEMICALS THEREFROM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |