US1753067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of adsorbable substances
Assignee: Carbide and Carbon Chemicals Corp
•
Filing: 1926-05-26
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Granted: 1930-04-01
•
Expires: 1946-05-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Ray
- 👤 George T Felbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:09
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01J; B01J20/00; B01J20/02; B01J20/20; B01J20/30; B01J20/34; B01J20/3416; B01J20/3483; B01D2259/00; B01D2259/40; 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) | 1933-03-31 | 1933-09-30 | 1934-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-31 | 1937-09-30 | 1938-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-31 | 1941-09-30 | 1942-04-01 | $7700.00 | Window Closed / Lapsed |