Patent US1836301A successfully refreshed from Google Patents.
US1836301A
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Regenerating granular adsorbents
Assignee: Individual
•
Filing: 1927-05-31
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Granted: 1931-12-15
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Expires: 1947-05-31
Abstract
No abstract record available.
Inventors
- 👤 Bechthold Friedrich Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:39
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/345; B01J20/3458; B01J20/3466; B01J20/02; B01J20/20; B01J20/3416; C; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/36
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) | 1934-12-14 | 1935-06-15 | 1935-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-14 | 1939-06-15 | 1939-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-14 | 1943-06-15 | 1943-12-15 | $7700.00 | Window Closed / Lapsed |