US3609097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst regeneration
Assignee: GEA Group AG
•
Filing: 1968-07-05
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Granted: 1971-09-28
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Expires: 1988-07-05
Abstract
Abstract A steam injector is used to circulate regenerating gas through a catalyst bed to burn off carbonaceous deposits on the catalyst.
Inventors
- 👤 Herbert Koppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:09
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/20; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/2705; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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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) | 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 |