US1825707A
Expired / Lapsed
US
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Method of adsorbing a gas in a solid adsorbent
Assignee: Silica Gel Corp
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Filing: 1927-05-24
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Granted: 1931-10-06
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Expires: 1947-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred H Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:49
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/112; B01D2253/1124; B01D2257/00; B01D2257/30; B01D2257/302; B01D2257/70; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D53/26; B01D53/261
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) | 1934-10-05 | 1935-04-06 | 1935-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-05 | 1939-04-06 | 1939-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-05 | 1943-04-06 | 1943-10-06 | $7700.00 | Window Closed / Lapsed |