US2492401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas adsorption
Assignee: Lummus Technology LLC
•
Filing: 1945-02-24
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Granted: 1949-12-27
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Expires: 1965-02-24
Abstract
No abstract record available.
Inventors
- 👤 Schutte August Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:44
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40088; B01D2259/4009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1577534A
Cited
US1616547A
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US1836301A
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US1758398A
Cited
US2009569A
Cited
US2270903A
Cited
US2247594A
Cited
US2340398A
Cited
US2397566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |