US3597169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for demethanization of liquid oxygen
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1968-11-13
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Granted: 1971-08-03
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Expires: 1988-11-13
Abstract
Abstract THE DISCLOSURE IS DIRECTED TO AN IMPROVED PROCESS FOR THE REMOVAL OF METHANE FROM A MIXTURE OF METHANE AND OXYGEN BY THE USE OF AN X-TYPE ZEOLITE CATALYST. THE USE OF SILVER AND CALCIUM CATION-EXCHANGED FORMS OF SYNTHETIC X ZEOLITES RESULT IN A MUCH HIGHER CAPACITY FOR METHANE REMOVAL THAN WAS HERETOFORE POSSIBLE UNDER THE PRIOR ART.
Inventors
- 👤 David W Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:48
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0259; C01B13/0262; C01B13/027; F; F17; F17C; F17C13/00; F17C13/12; C01B2210/00; C01B2210/0043; C01B2210/0068; C01B2210/007; Y; Y10; Y10S; Y10S423/00; Y10S423/21
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |