Patent US2546624A successfully refreshed from Google Patents.
US2546624A
Expired / Lapsed
US
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Permeable materials and methods of making same
Assignee: Halliburton Oil Well Cementing Co
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Filing: 1946-04-04
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Granted: 1951-03-27
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Expires: 1966-04-04
Abstract
No abstract record available.
Inventors
- 👤 Robert S Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:02
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2068; B01D39/2072; B01D39/2079; Y; Y10; Y10S; Y10S260/00; Y10S260/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A COMPOSITION OF MATTER FOR USE IN MAKING A FILTER SUITABLE FOR USE IN AN OIL WELL COMPRISING A SLURRY CONSISTING ESSENTIALLY OF INTIMATELY MIXED PORTIONS OF CLAY MUD AND LIQUID SYNTHEITC RESIN, THE MUD AND LIQUID RESIN HAVING APPROXIMATELY THE SAME DENSITY AND THE LIQUID RESIN BEING THERMOSETTING PHENOL-FORMALDEHYDE HAVING SOME WATER MISCIBILITY BUT NOT OVER 15 PERCENT MISCIBILITY.
Claim 2
Dependent Claim
60 words
A COMPOSITION OF MATTER FOR USE IN MAKING A FILTER SUITABLE FOR USE IN AN OIL WELL COMPRISING A SLURRY CONSISTING ESSENTIALLY OF INTIMATELY MIXED PORTIONS OF CLAY MUD AND LIQUID SYNTHEITC RESIN, THE MUD AND LIQUID RESIN HAVING APPROXIMATELY THE SAME DENSITY AND THE LIQUID RESIN BEING THERMOSETTING PHENOL-FORMALDEHYDE HAVING SOME WATER MISCIBILITY BUT NOT OVER 15 PERCENT MISCIBILITY.
References Cited (Backward Citations)
US1092512A
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US1576440A
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US2089813A
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US2189889A
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US2285302A
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US2288557A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |