US3301043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for the experimental determination of the permeability of foils to gas
Assignee: Hans Sickinger Co
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Filing: 1964-04-16
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Granted: 1967-01-31
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Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Georges H Lyssy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:19
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/18; G01N27/185; G01N15/00; G01N15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A METHOD FOR EXPERIMENTALLY DETERMINING THE RELATIVE PERMEABILITY OF TWO FOILS TO A TEST GAS, THE STEPS OF PROVIDING TWO CHAMBERS WHICH ARE THERMALLY SUBSTANTIALLY EQUIVALENT, USING A FIRST OF SAID FOILS TO FORM A WALL OF ONE OF SAID CHAMBERS AND THE SECOND FOIL TO FORM A WALL OF THE OTHER CHAMBER, FILLING BOTH CHAMBERS WITH A REFERENCE GAS, PERMITTING A TEST GAS DIFFERING FROM SAID REFERENCE GAS TO ACT AGAINST THE OUTSIDES OF BOTH FOILS, AND MEASURING THE DIFFERENCE IN THERMAL CONDUCTIVITIES OF THE REFERENCE GASES IN SAID TWO CHAMBERS CAUSED BY THE DIFFERENCE IN RATES OF DIFFUSION OF SAID TEST GAS THROUGH SAID TWO FOILS.
Claim 2
Dependent Claim
109 words
IN A METHOD FOR EXPERIMENTALLY DETERMINING THE RELATIVE PERMEABILITY OF TWO FOILS TO A TEST GAS, THE STEPS OF PROVIDING TWO CHAMBERS WHICH ARE THERMALLY SUBSTANTIALLY EQUIVALENT, USING A FIRST OF SAID FOILS TO FORM A WALL OF ONE OF SAID CHAMBERS AND THE SECOND FOIL TO FORM A WALL OF THE OTHER CHAMBER, FILLING BOTH CHAMBERS WITH A REFERENCE GAS, PERMITTING A TEST GAS DIFFERING FROM SAID REFERENCE GAS TO ACT AGAINST THE OUTSIDES OF BOTH FOILS, AND MEASURING THE DIFFERENCE IN THERMAL CONDUCTIVITIES OF THE REFERENCE GASES IN SAID TWO CHAMBERS CAUSED BY THE DIFFERENCE IN RATES OF DIFFUSION OF SAID TEST GAS THROUGH SAID TWO FOILS.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |