Patent US1865754A successfully refreshed from Google Patents.
Patent US3559296A successfully refreshed from Google Patents.
US3559296A
Expired / Lapsed
US
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Process for the regeneration of hydrocarbon adsorbents
Assignee: Bergwerksverband GmbH
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Filing: 1969-03-04
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Granted: 1971-02-02
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Expires: 1989-03-04
Abstract
Abstract GRANULAR OR SHAPED HYDROCARBON ADSORBENTS ARE REGENERATED BY SUBJECTING THE ADSORBENT TO A HEAT TREATMENT IN CONTACT WITH A HOT SOLID HEAT EXCHANGER.
Inventors
- 👤 Heinrich Dratwa
- 👤 Gunter Gappa
- 👤 Harald Juntgen
- 👤 Martin Kruel
- 👤 Jurgen Schwarte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:42
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/36; C01B32/366
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |