US3378484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening hydrocarbon liquids
Assignee: Howe Baker Engineers LLC
•
Filing: 1966-09-23
•
Granted: 1968-04-16
•
Expires: 1986-09-23
Abstract
No abstract record available.
Inventors
- 👤 John M Ferrara
- 👤 John E Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:12
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; B; B01; B01J; B01J47/00; B01J47/014; C10G25/03; C10G25/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2367803A
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US2730486A
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US3051646A
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US3192152A
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US3173855A
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GB1001428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |