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Patent US3748266A successfully refreshed from Google Patents.
US3748266A
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Methods and compositions for reducing frictional pressure loss in theflow of hydrocarbon liquids
Assignee: Halliburton Co
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Filing: 1971-11-01
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Granted: 1973-07-24
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Expires: 1991-11-01
Abstract
Abstract THE PRESENT INVENTION RELATES TO THE METHODS AND COMPOSITIONS FOR REDUCING THE FRICTIONAL PRESSURE LOSS ENCOUNTERED IN THE TURBULENT FLOW OF HYDROCARBON LIQUIDS THROUGH A CONDUIT. BY THE PRESENT INVENTION A FRICTIONAL PRESSURE LOSS ADDITIVE IS INTERMIXED WITH THE HYDROCARBON LIQUID, THE ADDITIVE BEING A HOMOPOLYMER OR A COPOLYMER OF THE MONOMER R1-C(=CH2)-C6H4-R2 OR COPOLYMERS OF SUCH MONOMER AND CERTAIN STYRENE, ACRYLATE OR METHACRYLATE TYPE MONOMERS.
Inventors
- 👤 W Malone
- 👤 M Holtmyer
- 👤 J Tinsley
- 👤 J Chatterji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:11
CPC Classifications
C; C09; C09K; C09K3/00; C09K8/00; C09K8/60; C09K8/62; C09K8/64; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10L1/16; C10L1/1625; C10L1/1633; C10L1/165; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1963; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |