US3147083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for the determination of impurities in inert gases
Assignee: Individual
•
Filing: 1962-01-08
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Granted: 1964-09-01
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Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 Steverding Bernard
- 👤 Leonar N Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:45
CPC Classifications
G; G01; G01N; G01N7/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A METHOD OF DETERMINING THE AMOUNT OF IMPURITIES IN AN INERT GAS IN AN APPARATUS INCLUDING A VESSEL PROVIDED WITH A GETTER COIL THEREIN AND HAVING A U-TUBE, CONTAINING COLUMNS OF MERCURY, IN COMMUNICATION WITH SAID VESSEL, WHICH COMPRISES THE STEPS OF EVACUATING THE VESSEL, FILLING THE VESSEL WITH THE INERT GAS, MAINTAINING SAID APPARATUS UNDER CONSTANT TEMPERATURE, EQUALIZING THE PRESSURE WITHIN THE APPARATUS TO THE PRESSURE OUTSIDE OF THE APPARATUS, ELECTRICALLY ENERGIZING THE COIL TO A PREDETERMINED LEVEL OF TEMPERATURE TO GETTER THE IMPURITIES THEREON, COOLING THE INERT GAS, DETERMINING THE HEIGHT DIFFERENCE IN THE MERCURY COLUMNS BEFORE AND AFTER GETTERING, THE DIFFERENCE BEING PROPORTIONATE TO THE AMOUNT OF REMOVED IMPURITIES.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |