US3215154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing friction loss in flowing hydrocarbon liquids
Assignee: Dow Chemical Co
•
Filing: 1962-04-13
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Granted: 1965-11-02
•
Expires: 1982-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jerry L White
- 👤 Daniel L Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:48
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; 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; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR REDUCING THE FLUID FLOW FRICTION LOSS IN THE TRANSMISSION OF A HYDROCARBON FLUID OF THE GROUP CONSISTING OF HYDROCARBON LIQUIDS AND SLURRIES THEREOF CONTAINING SUSPENDED SOLIDS, WHICH COMPRISES INTERMIXING WITH THE HYDROCARBON FLUID FROM 0.01 TO 25 POUNDS OF A SOLID, HIGH MOLECULAR WEIGHT POLYISOBUTYLENE RESIN PER 1,000 GALLONS OF HYDROCARBON LIQUID, SAID POLYISOBUTYLENE HAVING A VISCOSITY AVERAGE MOLECULAR WEIGHT IN THE RANGE OF 0.7 MILLION TO 15 MILLION AND TRANSFERRING THE RESULTING MIXTURE AT A VELOCITY SUFFICIENT TO ESTABLISH NONLAMINAR FLOW AS CHARACTERIZED BY A GENERALIZED REYNOLDS NUMBER BETWEEN 3X10**3 AND 1X10**7.
Claim 2
Dependent Claim
96 words
A PROCESS FOR REDUCING THE FLUID FLOW FRICTION LOSS IN THE TRANSMISSION OF A HYDROCARBON FLUID OF THE GROUP CONSISTING OF HYDROCARBON LIQUIDS AND SLURRIES THEREOF CONTAINING SUSPENDED SOLIDS, WHICH COMPRISES INTERMIXING WITH THE HYDROCARBON FLUID FROM 0.01 TO 25 POUNDS OF A SOLID, HIGH MOLECULAR WEIGHT POLYISOBUTYLENE RESIN PER 1,000 GALLONS OF HYDROCARBON LIQUID, SAID POLYISOBUTYLENE HAVING A VISCOSITY AVERAGE MOLECULAR WEIGHT IN THE RANGE OF 0.7 MILLION TO 15 MILLION AND TRANSFERRING THE RESULTING MIXTURE AT A VELOCITY SUFFICIENT TO ESTABLISH NONLAMINAR FLOW AS CHARACTERIZED BY A GENERALIZED REYNOLDS NUMBER BETWEEN 3X10**3 AND 1X10**7.
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |