US3692676A
Expired / Lapsed
US
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Method of friction loss reduction in oleaginous fluids flowing through conduits
Assignee: ConocoPhillips Co
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Filing: 1969-12-22
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Granted: 1972-09-19
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Expires: 1989-12-22
Abstract
Abstract A METHOD OF REDUCING THE FRICTION LOSS NORMALLY OCCURRING WHEN OLEAGINOUS FLUIDS FLOW THROUGH CONDUITS BY ADDING TO THE OLEAGINOUS FLUID A MINOR AMOUNT OF A VERY HIGH MOLECULAR WEIGHT POLYOLEFIN.
Inventors
- 👤 John D Culter
- 👤 Gifford G Mcclaflin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:03
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; C08; C08F; C08F6/00; C08F6/06; C08F6/12; C09; C09K; C09K3/00; C09K8/00; C09K8/60; C09K8/62; C09K8/64; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1625; C10L1/1633; C10L1/1641; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |