US3332745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of quantitatively determining trace impurities in inert gas systems
Assignee: Individual
•
Filing: 1963-12-20
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Granted: 1967-07-25
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Desmond M Bailey
- 👤 William T Abel
- 👤 Peter G Salgado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:50
CPC Classifications
G; G01; G01N; G01N5/00; Y; Y10; Y10S; Y10S436/00; Y10S436/908; Y10T; Y10T436/00; Y10T436/20; Y10T436/204998; Y10T436/207497; Y10T436/209163; Y10T436/21; Y10T436/214
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD FOR QUANTITATIVELY DETERMINING THE AMOUNT OF IMPURITIES IN AN INERT GAS WHICH COMPRISES (1) WEIGHING A METALLIC FILAMENT, (2) ELECTRICALLY HEATING THE FILAMENT TO A CONTROLLED TEMPERATURE, (3) PASSING THE INERT GAS IN CONTACT WITH THE HEATED FILAMENT, (4) COOLING THE FILAMENT AND (5) REWEIGHTING THE FILAMENT TO DETERMINE THE CHANGE IN WEIGHT OF THE FILAMENT.
Claim 2
Independent Claim
58 words
A METHOD FOR QUANTITATIVELY DETERMINING THE AMOUNT OF IMPURITIES IN AN INERT GAS WHICH COMPRISES (1) WEIGHING A METALLIC FILAMENT, (2) ELECTRICALLY HEATING THE FILAMENT TO A CONTROLLED TEMPERATURE, (3) PASSING THE INERT GAS IN CONTACT WITH THE HEATED FILAMENT, (4) COOLING THE FILAMENT AND (5) REWEIGHTING THE FILAMENT TO DETERMINE THE CHANGE IN WEIGHT OF THE FILAMENT.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |