US2731330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Determination of oxygen in titanium and titanium alloys
Assignee: Individual
•
Filing: 1954-12-10
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Granted: 1956-01-17
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Expires: 1974-12-10
Abstract
No abstract record available.
Inventors
- 👤 Codell Maurice
- 👤 Norwitz George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/12; G01N33/00; G01N33/20; G01N33/202; G01N33/2022; G01N33/2025; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497; Y10T436/209163
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
A PROCESS FOR QUANTITATIVE DETERMINATION OF THE OXYGEN CONTENT OF TITANIUM ALLOYS COMPRISING: PURIFICATION OF AN INERT GAS AT A RATE OF ABOUT 130 MILLILITERS PER MINUTE BY SUCCESSIVE CONTACT WITH COPPER AND COPPER OXIDE MAINTAINED AT ABOUT 500* C., SODIUM HYDROXIDE AND ANHYDROUS MAGNESIUM PERCHLORATE; SATURATION OF THE PURIFIED GAS WITH BROMINE VAPOR BY PASSING SAID GAS AS A CARRIER THROUGH LIQUID BROMINE; DEHYDRATION OF THE BROMINE VAPOR BY CONDUCTING THE BROMINE-SATURATED GAS THROUGH SULPHURIC ACID; REACTION OF THE BROMINE WITH A SAMPLE IMMERSED IN CARBON IN EXCESS OF STOICHIOMETRIC QUANTITY AND MAINTAINED AT ABOUT 815 * C., BY CONDUCTING THE BROMINE-SATURATED GAS OVER THE SAMPLE; SEPARATION FROM THE PRODUCTS OF REACTION OF METALLIC BROMIDES AND UNREACTED BROMINE BY PROGRESSIVE EXPOSURE TO REFRIGERANT AT FROM ABOUT 0* C. TO ABOUT MINUS 170* C.; SEPARATION FROM THE PRODUCTS OF
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |