US1924849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption system
Assignee: Silica Gel Corp
•
Filing: 1931-10-21
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Granted: 1933-08-29
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Expires: 1951-10-21
Abstract
No abstract record available.
Inventors
- 👤 Bayard P Fonda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:22
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0438; B01D53/26; B01D53/261; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/104; B01D2253/106; B01D2255/00; B01D2255/20; B01D2255/207; B01D2255/20707; B01D2255/20776; B01D2256/00; B01D2256/12; B01D2256/16; B01D2256/22; B01D2257/00; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40003; B01D2259/40083; B01D2259/40088; B01D2259/4009; B01D2259/40096; B01D2259/402
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) | 1936-08-28 | 1937-02-27 | 1937-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-28 | 1941-02-27 | 1941-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-28 | 1945-02-27 | 1945-08-29 | $7700.00 | Window Closed / Lapsed |