Patent US2306387A successfully refreshed from Google Patents.
Patent US3352146A successfully refreshed from Google Patents.
US3352146A
Expired / Lapsed
US
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Method and means for testing the gas permeability and closure leakage of containers
Assignee: Hans Sickinger Co
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Filing: 1965-12-08
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Granted: 1967-11-14
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Expires: 1985-12-08
Abstract
No abstract record available.
Inventors
- 👤 Georges H Lyssy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:53
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/002; G01M3/02; G01M3/26; G01M3/32; G01M3/3281; G01M3/329
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN AN APPARATUS FOR TESTING THE PERMEABILITY AND CLOSURE LEAKAGE PROPERTIES OF A PACKAGE, A HOUSING HAVING AN EXPERIMENT CHAMBER AND A REFERENCE CHAMBER, SAID CHAMBERS BEING IN THERMALLY CONDUCTIVE CONTACT BUT SEALED FROM EACH OTHER AND FROM THE OUTSIDE OF THE HOUSING, REMOVABLE GAS-TIGHT COVERS FOR SAID CHAMBERS, MEANS FOR CAUSING GAS TO BE FED UNDER PRESSURE INTO EACH OF SAID CHAMBERS AND SEALED THEREIN, MEANS IN SAID EXPERIMENT CHAMBER FOR SUPPORTING A CONTAINER TO BE TESTED THEREIN, A THERMAL CONDUCTIVITY MEASURING ELEMENT MOUNTED ON EACH OF SAID CHAMBERS, AND A BRIDGE CIRCUIT CONNECTING SAID ELEMENTS.
Claim 2
Dependent Claim
97 words
IN AN APPARATUS FOR TESTING THE PERMEABILITY AND CLOSURE LEAKAGE PROPERTIES OF A PACKAGE, A HOUSING HAVING AN EXPERIMENT CHAMBER AND A REFERENCE CHAMBER, SAID CHAMBERS BEING IN THERMALLY CONDUCTIVE CONTACT BUT SEALED FROM EACH OTHER AND FROM THE OUTSIDE OF THE HOUSING, REMOVABLE GAS-TIGHT COVERS FOR SAID CHAMBERS, MEANS FOR CAUSING GAS TO BE FED UNDER PRESSURE INTO EACH OF SAID CHAMBERS AND SEALED THEREIN, MEANS IN SAID EXPERIMENT CHAMBER FOR SUPPORTING A CONTAINER TO BE TESTED THEREIN, A THERMAL CONDUCTIVITY MEASURING ELEMENT MOUNTED ON EACH OF SAID CHAMBERS, AND A BRIDGE CIRCUIT CONNECTING SAID ELEMENTS.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |