US3102548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for enhancing the flow of fluids
Assignee: Wyeth Holdings LLC
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Filing: 1962-08-14
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Granted: 1963-09-03
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Expires: 1982-08-14
Abstract
No abstract record available.
Inventors
- 👤 James B Smith
- 👤 Francis S Seichter
- 👤 Stephen F Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:53
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A PROCESS WHEREIN AN AQUEOUS FLUID IS PUMPED IN TURBULENT FLOW UNDER SUBSTANTIALLY STEADY STATE CONDITIONS, THE IMPROVEMENT WHICH COMPRISES: ADMIXING WITH THE AQUEOUS FLUID FROM 0.0075 TO 0.03 WEIGHT PERCENT OF A POLYACRYLAMIDE CONTAINING FROM 0 TO ABOUT 3 MOL PERCENT RESIDUAL CARBOXYL GROUPS AND POSSESSING AN AVERAGE MOLECULAR WEIGHT EQUAL TO AT LEAST 3 MILLIONS AND NOT MORE THAN ABOUT 12 MILLIONS.
Claim 2
Dependent Claim
65 words
IN A PROCESS WHEREIN AN AQUEOUS FLUID IS PUMPED IN TURBULENT FLOW UNDER SUBSTANTIALLY STEADY STATE CONDITIONS, THE IMPROVEMENT WHICH COMPRISES: ADMIXING WITH THE AQUEOUS FLUID FROM 0.0075 TO 0.03 WEIGHT PERCENT OF A POLYACRYLAMIDE CONTAINING FROM 0 TO ABOUT 3 MOL PERCENT RESIDUAL CARBOXYL GROUPS AND POSSESSING AN AVERAGE MOLECULAR WEIGHT EQUAL TO AT LEAST 3 MILLIONS AND NOT MORE THAN ABOUT 12 MILLIONS.
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |