Patent US2743233A successfully refreshed from Google Patents.
US2743233A
Expired / Lapsed
US
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Oil-base drilling muds and methods of drilling with same
Assignee: Phillips Petroleum Co
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Filing: 1952-01-03
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Granted: 1956-04-24
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Expires: 1972-01-03
Abstract
No abstract record available.
Inventors
- 👤 Henry B Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:35
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/32; Y; Y10; Y10S; Y10S507/00; Y10S507/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A DRILLING MUD COMPRISING AN OIL AT LEAST PART OF WHICH BOILS ABOVE 400* F., AT LEAST ONE DRILLING MUD COMPONENT SELECTED FROM THE GROUP CONSISTING OF WATER, CLAY, WEIGHTING AGENTS, AND EARTH CUTTINGS, AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF A HYDROGENATED HEAVY POLYMER OF AN ACYCLIC LOW MOLECULAR WEIGHT CONJUGATED DIENE AND A HEAVY COPOLYMER OF A MIXTURE OF MONOMERS AT LEAST ONE OF WHICH IS AN ACYCLIC LOW MOLECULAR WEIGHT CONJUGATED DIENE.
Claim 2
Dependent Claim
78 words
A DRILLING MUD COMPRISING AN OIL AT LEAST PART OF WHICH BOILS ABOVE 400* F., AT LEAST ONE DRILLING MUD COMPONENT SELECTED FROM THE GROUP CONSISTING OF WATER, CLAY, WEIGHTING AGENTS, AND EARTH CUTTINGS, AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF A HYDROGENATED HEAVY POLYMER OF AN ACYCLIC LOW MOLECULAR WEIGHT CONJUGATED DIENE AND A HEAVY COPOLYMER OF A MIXTURE OF MONOMERS AT LEAST ONE OF WHICH IS AN ACYCLIC LOW MOLECULAR WEIGHT CONJUGATED DIENE.
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) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |