Patent US2773030A successfully refreshed from Google Patents.
US2773030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling muds
Assignee: Gulf Oil Corp
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Filing: 1954-10-28
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Granted: 1956-12-04
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Expires: 1974-10-28
Abstract
No abstract record available.
Inventors
- 👤 Rodolfo J Tailleur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A DRILLING MUD OF ENHANCED LUBRICATING PROPERTIES COMPRISING AN OIL-IN-WATER EMULSION CONTAINING CLAY SOLIDS AND A WATER-INSOLUBLE, OIL-SOLUBLE SULFURIZED ORGANIC COMPOUND, SAID SULFURIZED COMPOUND BEING PRESENT IN AN AMOUNT SUFFICIENT TO INCREASE THE TIMKEN LOAD-CARRYING CAPACITY OF THE MUD TO AT LEAST ABOUT 30 POUNDS, SAID MUD CONTAINING NO AMOUNT OF ALKALI METAL HYDROXIDE SUFFICIENT TO DESTROY THE ENHANCED LUBRICATING PROPERTIES OF THE MUD.
Claim 2
Dependent Claim
64 words
A DRILLING MUD OF ENHANCED LUBRICATING PROPERTIES COMPRISING AN OIL-IN-WATER EMULSION CONTAINING CLAY SOLIDS AND A WATER-INSOLUBLE, OIL-SOLUBLE SULFURIZED ORGANIC COMPOUND, SAID SULFURIZED COMPOUND BEING PRESENT IN AN AMOUNT SUFFICIENT TO INCREASE THE TIMKEN LOAD-CARRYING CAPACITY OF THE MUD TO AT LEAST ABOUT 30 POUNDS, SAID MUD CONTAINING NO AMOUNT OF ALKALI METAL HYDROXIDE SUFFICIENT TO DESTROY THE ENHANCED LUBRICATING PROPERTIES OF THE MUD.
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |