Patent US4440693A successfully refreshed from Google Patents.
Patent US3131035A successfully refreshed from Google Patents.
US3131035A
Expired / Lapsed
US
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Method of heat recovery from waste gases containing vapor
Assignee: Individual
•
Filing: 1960-11-25
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Granted: 1964-04-28
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Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Reginald T Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:50
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/005; F26B23/00; F26B23/02; F26B23/022; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN COMBINATION WITH A PROCESS OF RENDERING MATERIAL IN SOLID AND LIQUID MATERIAL PHASES IN WHICH THE SOLID MATERIAL PHASE IS SUBJECTED TO DRYING TO REDUCE THE MOISTURE CONTENT THEREOF AND THE LIQUID MATERIAL PHASE IS SUBJECTED TO CONCENTRATION TO RECOVER CERTAIN COMPONENTS THEREOF, THE STEPS OF: PASSING GASES CONTAINING VAPORS EXHAUSTED FROM THE DRYING OF THE SOLID PHASE ALONG A PATH TO A HEAT-EXCHANGE MEANS HAVING HEAT TRANSMITTING WALLS; SCRUBBING SAID EXHAUSTED GASES PRIOR TO THEIR CONTACT WITH SAID WALLS WITH CONDENSATE DERIVED SUBSTANTIALLY FROM SAID VAPORS CONTAINED IN SAID GASES TO PARTIALLY REMOVE SUPERHEAT THEREOF AND WETTING SAID WALLS WWITH SAID VAPOR IN SAID GASES AND SAID CONDENSATE; CIRCULATING GASES FROM SAID HEAT-EXCHANGE MEANS FOR REINTRODUCTION INTO
Claim 2
Dependent Claim
119 words
IN COMBINATION WITH A PROCESS OF RENDERING MATERIAL IN SOLID AND LIQUID MATERIAL PHASES IN WHICH THE SOLID MATERIAL PHASE IS SUBJECTED TO DRYING TO REDUCE THE MOISTURE CONTENT THEREOF AND THE LIQUID MATERIAL PHASE IS SUBJECTED TO CONCENTRATION TO RECOVER CERTAIN COMPONENTS THEREOF, THE STEPS OF: PASSING GASES CONTAINING VAPORS EXHAUSTED FROM THE DRYING OF THE SOLID PHASE ALONG A PATH TO A HEAT-EXCHANGE MEANS HAVING HEAT TRANSMITTING WALLS; SCRUBBING SAID EXHAUSTED GASES PRIOR TO THEIR CONTACT WITH SAID WALLS WITH CONDENSATE DERIVED SUBSTANTIALLY FROM SAID VAPORS CONTAINED IN SAID GASES TO PARTIALLY REMOVE SUPERHEAT THEREOF AND WETTING SAID WALLS WWITH SAID VAPOR IN SAID GASES AND SAID CONDENSATE; CIRCULATING GASES FROM SAID HEAT-EXCHANGE MEANS FOR REINTRODUCTION INTO
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |