US3414482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preventing fractionator reboiler fouling
Assignee: Phillips Petroleum Co
•
Filing: 1966-08-01
•
Granted: 1968-12-03
•
Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 John M Folz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:04
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; Y; Y10; Y10S; Y10S203/00; Y10S203/11; Y10S203/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2280093A
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US2640018A
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US2833644A
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US3084110A
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US3269921A
Cited
US3272722A
Cited
US3294649A
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US3340158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |