US3216435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and related apparatus for facilitating pipeline flow
Assignee: Marathon Oil Co
•
Filing: 1964-10-12
•
Granted: 1965-11-09
•
Expires: 1984-10-12
Abstract
No abstract record available.
Inventors
- 👤 Fred H Poettmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:04
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/26; F16L55/46; F16L55/28; F16L55/30; F16L55/38; F16L2101/00; F16L2101/10; F16L2101/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/4891; Y10T137/9682
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF CONTINUOUSLY MAINTAINING A FILM OF LOWER VISCOSITY LIQUID ON THE INTERIOR SURFACE OF A PIPE LINE TRANSPORTING A VISCOUS LIQUID WHICH COMPRISES INTRODUCING A CONFINED BODY OF LOWER VISCOSITY OF LIQUID INTO A FLOWING STREAM OF VISCOUS LIQUID IN A PIPE LINE FOR COCURRENT MOVEMENT WITH SAID FLOW, MAINTAINING CIRCUMFERENTIAL SURFACES OF THE CONFINING STRUCTURE IN WIPING CONTACT WITH THE INTERNAL SURFACE OF THE PIPE LINE DURING SUCH COCURRENT MOVEMENT, AND EJECTING THE CONFINED LOWER VISCOSITY LIQUID THROUGH THE CIRCUMFERENTIAL CONTACTING SURFACES IN A CONTROLLED VOLUME SO AS TO PRODUCE A CONCENTRIC FLOW OF LOWER VISCOSITY LIQUID AND VISCOUS LIQUID THROUGH THE PIPE LINE.
Claim 2
Independent Claim
107 words
THE METHOD OF CONTINUOUSLY MAINTAINING A FILM OF LOWER VISCOSITY LIQUID ON THE INTERIOR SURFACE OF A PIPE LINE TRANSPORTING A VISCOUS LIQUID WHICH COMPRISES INTRODUCING A CONFINED BODY OF LOWER VISCOSITY OF LIQUID INTO A FLOWING STREAM OF VISCOUS LIQUID IN A PIPE LINE FOR COCURRENT MOVEMENT WITH SAID FLOW, MAINTAINING CIRCUMFERENTIAL SURFACES OF THE CONFINING STRUCTURE IN WIPING CONTACT WITH THE INTERNAL SURFACE OF THE PIPE LINE DURING SUCH COCURRENT MOVEMENT, AND EJECTING THE CONFINED LOWER VISCOSITY LIQUID THROUGH THE CIRCUMFERENTIAL CONTACTING SURFACES IN A CONTROLLED VOLUME SO AS TO PRODUCE A CONCENTRIC FLOW OF LOWER VISCOSITY LIQUID AND VISCOUS LIQUID THROUGH THE PIPE LINE.
References Cited (Backward Citations)
US1787126A
Cited
US2353951A
Cited
US2445645A
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US2567475A
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US2821205A
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US2792807A
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US2892444A
Cited
US3040760A
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US2953157A
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US3058137A
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US3056155A
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US3037228A
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |