Patent US2434419A successfully refreshed from Google Patents.
US2434419A
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Process of regenerating adsorbents
Assignee: ATTAPULGUS CLAY Co
•
Filing: 1944-09-21
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Granted: 1948-01-13
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Expires: 1964-09-21
Abstract
No abstract record available.
Inventors
- 👤 Carl D Laughlin
- 👤 Jr Harry M Gwyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:04
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/02; C10K1/024; B; B01; B01D; B01D53/00; B01D53/26; B01J; B01J20/00; B01J20/02; B01J20/06; B01J20/08; B01J20/30; B01J20/34; B01J20/3433; B01J20/3483
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |