US3436839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus of heating spent adsorber beds
Assignee: ConocoPhillips Co
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Filing: 1966-12-01
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Granted: 1969-04-08
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Ellington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:55
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0438; B01D2259/00; B01D2259/40; B01D2259/401; B01D2259/414; B01D2259/4141; B01D2259/4145; B01D2259/4148; B01D53/0423
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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |