US3405553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for determining the permeability of solids
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1964-11-02
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Granted: 1968-10-15
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Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Boisard Pierre
- 👤 Lamazou Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:29
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08; G01N15/082; G01N15/0826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN APPARATUS FOR DETERMINING THE PERMEABILITY OF CYLINDRICAL SAMPLES OF SOLID MATERIAL, WHICH COMPRISES IN COMBINATION: IN A FIRST HOUSING, A MASTER CYLINDER PROVIDED WITH TWO PISTONS AND MEANS FOR MKING FLUID-TIGHT THE LATERIAL FACE OF A CYLINDRICAL SOLID SAMPLE OF THE MATERIAL, MEANS FOR INTRODUCING THE SAMPLES INTO AND DISCHARGING THEM FROM THE MASTER CYLINDER, MEANS FOR DISPLACING THE SAID SAMPLES IN THE SAID MASTER CYLINDER AND
Claim 2
Independent Claim
68 words
AN APPARATUS FOR DETERMINING THE PERMEABILITY OF CYLINDRICAL SAMPLES OF SOLID MATERIAL, WHICH COMPRISES IN COMBINATION: IN A FIRST HOUSING, A MASTER CYLINDER PROVIDED WITH TWO PISTONS AND MEANS FOR MKING FLUID-TIGHT THE LATERIAL FACE OF A CYLINDRICAL SOLID SAMPLE OF THE MATERIAL, MEANS FOR INTRODUCING THE SAMPLES INTO AND DISCHARGING THEM FROM THE MASTER CYLINDER, MEANS FOR DISPLACING THE SAID SAMPLES IN THE SAID MASTER CYLINDER AND
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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |