Patent US1869144A successfully refreshed from Google Patents.
US1869144A
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US
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Liquid treatment
Assignee: GEN ZEOLITE Co
•
Filing: 1928-08-20
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Granted: 1932-07-26
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Expires: 1948-08-20
Abstract
No abstract record available.
Inventors
- 👤 Walter H Green
- 👤 Samuel L Adelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/2405; B01D21/30; B01D21/34; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0379; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/6851; Y10T137/6966; Y10T137/7287; Y10T137/7297; Y10T137/731; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/7762; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7789; Y10T137/8593; Y10T137/86348
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) | 1935-07-26 | 1936-01-25 | 1936-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-26 | 1940-01-25 | 1940-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-26 | 1944-01-25 | 1944-07-26 | $7700.00 | Window Closed / Lapsed |