US3357564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering apparatus and method of making it
Assignee: Halliburton Co
•
Filing: 1964-09-22
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Granted: 1967-12-12
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Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Erskin L Medford
- 👤 Lloyd C Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:03
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A SCREEN APPARATUS FOR USE IN WELL BORES, SAID APPARATUS COMPRISING LONGITUDINALLY EXTENDING CONDUIT MEANS HAVING RADIALLY EXTENDING OPENINGS, A FLUID PERMABLE SCREEN OF GRANULAR MATERIAL, SAID SCREEN COMPRISING A FIRST LAYER OF RELATIVELY COARSE GRANULAR MATERIAL ENCOMPASSING SAID CONDUIT MEANS, A SECOND LAYER OF RELATIVELY FINE GRANULAR MATERIAL ENCOMPASSING SAID FIRST LAYER, A THIRD LAYER OF RELATIVELY COARSE GRAULAR MATERIAL ENCOMPASSING SAID SECOND LAYER, AT LEAST ONE OF SAID LAYERS BEING OF A UNITARY BONDED CONSTRUCTION, AND A HOUSING CONNECTED TO SAID CONDUIT MEANS AND ENCASING SAID LAYERS AND INCLUDING AT LEAST ONE GENERALLY CYLINDRICAL WALL BONDED TO SAID ONE OF SAID LAYERS, SAID HOUSING HAVING RADIALLY EXTENDING OPENINGS.
Claim 2
Dependent Claim
110 words
A SCREEN APPARATUS FOR USE IN WELL BORES, SAID APPARATUS COMPRISING LONGITUDINALLY EXTENDING CONDUIT MEANS HAVING RADIALLY EXTENDING OPENINGS, A FLUID PERMABLE SCREEN OF GRANULAR MATERIAL, SAID SCREEN COMPRISING A FIRST LAYER OF RELATIVELY COARSE GRANULAR MATERIAL ENCOMPASSING SAID CONDUIT MEANS, A SECOND LAYER OF RELATIVELY FINE GRANULAR MATERIAL ENCOMPASSING SAID FIRST LAYER, A THIRD LAYER OF RELATIVELY COARSE GRAULAR MATERIAL ENCOMPASSING SAID SECOND LAYER, AT LEAST ONE OF SAID LAYERS BEING OF A UNITARY BONDED CONSTRUCTION, AND A HOUSING CONNECTED TO SAID CONDUIT MEANS AND ENCASING SAID LAYERS AND INCLUDING AT LEAST ONE GENERALLY CYLINDRICAL WALL BONDED TO SAID ONE OF SAID LAYERS, SAID HOUSING HAVING RADIALLY EXTENDING OPENINGS.
References Cited (Backward Citations)
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Cited
US1588920A
Cited
US1992718A
Cited
US3064819A
Cited
US3148962A
Cited
US3173488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |