US3392111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of ion exchange catalyst in sweetening process
Assignee: Howe Baker Engineers LLC
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Filing: 1967-06-16
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Granted: 1968-07-09
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Expires: 1987-06-16
Abstract
No abstract record available.
Inventors
- 👤 Harris G Napier
- 👤 Jr Alfred R Pate
- 👤 Robert H Elkins
- 👤 John M Ferrara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:20
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; B; B01; B01J; B01J49/00; B01J49/50; C10G25/03; C10G25/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |