Patent US1770166A successfully refreshed from Google Patents.
US1770166A
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US
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Method of treating adsorbents
Assignee: CONTACT FILTRATION Co
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Filing: 1928-03-10
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Granted: 1930-07-08
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Expires: 1948-03-10
Abstract
No abstract record available.
Inventors
- 👤 Franklin A Bent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:05
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; B01J20/103; B01J20/30; B01J20/34; B01J20/3433; B01J20/345; B01J20/3475; B01J20/3483
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) | 1933-07-07 | 1934-01-06 | 1934-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-07-07 | 1938-01-06 | 1938-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-07-07 | 1942-01-06 | 1942-07-08 | $7700.00 | Window Closed / Lapsed |