US2944627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fractionating gaseous mixtures by adsorption
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-02-12
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Granted: 1960-07-12
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Charles W Skarstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:10
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/047; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/104; B01D2253/106; B01D2253/108; B01D2253/30; B01D2253/302; B01D2253/304; B01D2253/308; B01D2256/00; B01D2256/10; B01D2256/12; B01D2256/24; B01D2257/00; B01D2257/10; B01D2257/102; B01D2257/104; B01D2257/50; B01D2257/504; B01D2257/70; B01D2257/702; B01D2257/7027; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40001; B01D2259/402; B01D2259/414; B01D2259/4141; B01D2259/4145; B01D2259/4146; B01D53/0473; B01D53/26; B01D53/261; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2661808A
Cited
US2702826A
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US2699837A
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US2747681A
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US2815089A
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US2800197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |