US3608273A
Expired / Lapsed
US
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Apparatus and process for desorption of filter beds by electric current
Assignee: University of Massachusetts Lowell
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Filing: 1969-01-15
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Granted: 1971-09-28
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Expires: 1989-01-15
Abstract
Abstract APPARATUS FOR USE IN ADSORPTION OF CONTAMINANTS FROM FLUID STREAMS, SAID APPARATUS COMPRISING A PARTICULATE ADSORBENT WHICH IS SUFFICIENTLY CONDUCTIVE TO BE SUSCEPTIBLE TO DIRECT HEATING BY AN ELECTRICAL RESISTANCE HEATING MEANS FOR PERIODICALLY HEATING THE CONTAMINANT-LADEN ADSORBENT TO A TEMPERATURE EFFECTIVE TO FREE IT OS THE CONTAMINANTS AND THEREBY PREPARE IT FOR FURTHER USE WITHOUT NEED OF REMOVING IT FROM SAID APPARATUS.
Inventors
- 👤 Bela M Fabuss
- 👤 Wilson C Du Bois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:48
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01D; B01D15/00; B01D53/00; B01D53/02; B01J8/00; B01J8/02; B01J8/0285; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00389; B01J2208/00398; B01J2208/00415; B01J2219/00; B01J2219/08; B01J2219/0803; B01J2219/0805; B01J2219/0807; B01J2219/0824; B01J2219/0835; B01J2219/0873; B01J2219/0875
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |