US2809107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of degassing molten metals
Assignee: Alcoa Corp
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Filing: 1953-12-22
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Granted: 1957-10-08
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Expires: 1973-12-22
Abstract
No abstract record available.
Inventors
- 👤 Allen S Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:38
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/02; C22B21/00; C22B21/06; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF REMOVING DISSOLVED HYDROGEN FROM MOLTEN METAL BY DIFFUSION COMPRISING BRING THE MOLTEN HYDROGEN-CONTAINING METAL INTO INTIMATE ASSOCIATION WITH A SOLID MEMBRANCE WHICH IS PERMEABLE TO THE PASSAGE OF SAID HYDROGEN BY DIFFUSION BUT WHICH IS IMPERVIOUS TO THE PASSAGE OF MOLTEN METAL THERETHROUGH AND WHICH IS HEATED THROUGH ASSOCIATION WITH THE MOLTEN METAL, AND CAUSING SAID HYDROGEN TO DIFFUSE THROUGH SAID MEMBRANE.
Claim 2
Independent Claim
65 words
THE METHOD OF REMOVING DISSOLVED HYDROGEN FROM MOLTEN METAL BY DIFFUSION COMPRISING BRING THE MOLTEN HYDROGEN-CONTAINING METAL INTO INTIMATE ASSOCIATION WITH A SOLID MEMBRANCE WHICH IS PERMEABLE TO THE PASSAGE OF SAID HYDROGEN BY DIFFUSION BUT WHICH IS IMPERVIOUS TO THE PASSAGE OF MOLTEN METAL THERETHROUGH AND WHICH IS HEATED THROUGH ASSOCIATION WITH THE MOLTEN METAL, AND CAUSING SAID HYDROGEN TO DIFFUSE THROUGH SAID MEMBRANE.
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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |