US3479797A
Expired / Lapsed
US
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Surge chamber for hydrocarbon recovery sorption systems
Assignee: ConocoPhillips Co
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Filing: 1967-08-10
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Granted: 1969-11-25
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Expires: 1987-08-10
Abstract
No abstract record available.
Inventors
- 👤 John R Spencer
- 👤 Walton D Greathouse
- 👤 James H Cheek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:27
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; C; C10; C10G; C10G5/00; C10G5/02; F; F25; F25J; F25J5/00; B01D2256/00; B01D2256/24; B01D2259/00; B01D2259/40; B01D2259/40003; B01D2259/40083; B01D2259/40086; B01D2259/403; B01D53/0407; B01D53/0446
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |