US2830948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well working composition
Assignee: ConocoPhillips Co
•
Filing: 1956-01-30
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Granted: 1958-04-15
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Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jack L Popham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:56
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/003; Y; Y10; Y10S; Y10S507/00; Y10S507/906; Y10S507/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A WELL WORKING COMPOSITION COMPRISING A PETROLEUM OIL, HAVING AN A.P.I. GRAVITY OF LESS THAN 29* AND .5 TO 2 POUNDS ASBESTOS PER BARREL OF OIL WHEREIN ABOUT 75 PERCENT OF THE ASBESTOS HAS A FIBER LENGTH LESS THAN 2 MICRONS SUSPENDED IN THE PETROLEUM OIL FOR CONTROLLING THE FLUID LOSS PROPERTIES AND VISCOSITY OF THE COMPOSITIONS, SAID WELL WORKING COMPOSITION BEING CHARACTERIZED BY HAVING AN A.P.I. FLUID LOSS LESS THAN 10 CC. PER 30 MINUTES.
Claim 2
Dependent Claim
76 words
A WELL WORKING COMPOSITION COMPRISING A PETROLEUM OIL, HAVING AN A.P.I. GRAVITY OF LESS THAN 29* AND .5 TO 2 POUNDS ASBESTOS PER BARREL OF OIL WHEREIN ABOUT 75 PERCENT OF THE ASBESTOS HAS A FIBER LENGTH LESS THAN 2 MICRONS SUSPENDED IN THE PETROLEUM OIL FOR CONTROLLING THE FLUID LOSS PROPERTIES AND VISCOSITY OF THE COMPOSITIONS, SAID WELL WORKING COMPOSITION BEING CHARACTERIZED BY HAVING AN A.P.I. FLUID LOSS LESS THAN 10 CC. PER 30 MINUTES.
References Cited (Backward Citations)
US2214366A
Cited
US2610149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |