US3023760A
Expired / Lapsed
US
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Method of decreasing friction loss in flowing fluids
Assignee: Dow Chemical Co
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Filing: 1961-02-03
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Granted: 1962-03-06
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Expires: 1981-02-03
Abstract
No abstract record available.
Inventors
- 👤 Charles D Dever
- 👤 Raymond J Harbour
- 👤 Walter F Seifert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:34
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/18; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/035; C09K8/04; C09K8/14; C09K8/18; C09K8/22; C09K8/24; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A PROCESS WHEREIN AN AQUEOUS MIXTURE IS MOVED IN TURBULENT FLOW, UNDER SUBSTANTIALLY STEADY STATE CONDITIONS AT A MODIFIED REYNOLDS NUMBER IN A RANGE OF 3X103 TO 1X107 THE IMPROVEMENT OF REDUCING THE FRICTION LOSS DUE TO THE FLOW, WHICH COMPRISES INTERMIXING WITH THE AQUEOUS MIXTURE FROM 0.005 TO 1 WEIGHT PERCENT OF A LINEAR, HIGH MOLECULAR WEIGHT, WATER-SOLUBLE POLYMER SULFONATE WHICH IS AN ADDITION POLYMER OF A MONOALKENYLAROMATIC SULFONATE HAVING THE FORMULA
Claim 2
Dependent Claim
74 words
IN A PROCESS WHEREIN AN AQUEOUS MIXTURE IS MOVED IN TURBULENT FLOW, UNDER SUBSTANTIALLY STEADY STATE CONDITIONS AT A MODIFIED REYNOLDS NUMBER IN A RANGE OF 3X103 TO 1X107 THE IMPROVEMENT OF REDUCING THE FRICTION LOSS DUE TO THE FLOW, WHICH COMPRISES INTERMIXING WITH THE AQUEOUS MIXTURE FROM 0.005 TO 1 WEIGHT PERCENT OF A LINEAR, HIGH MOLECULAR WEIGHT, WATER-SOLUBLE POLYMER SULFONATE WHICH IS AN ADDITION POLYMER OF A MONOALKENYLAROMATIC SULFONATE HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |