US3421984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of fluids by selective adsorption of an impure side stream from a distillation with adsorber regeneration
Assignee: Susquehanna Corp
•
Filing: 1967-05-02
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Granted: 1969-01-14
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Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 William Paul Jensen
- 👤 Stanley Lazerus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:39
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D3/00; B01D3/14; B01D3/143; B01D2257/00; B01D2257/70; B01D2257/702; B01D2259/00; B01D2259/40; B01D2259/404; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2137605A
Cited
US2374091A
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US2850549A
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US2996558A
Cited
US3122486A
Cited
US3132079A
Cited
US3257314A
Cited
US3342891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |