US2995478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degassing aluminum articles
Assignee: Alcoa Corp
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Filing: 1959-02-17
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Granted: 1961-08-08
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Expires: 1979-02-17
Abstract
No abstract record available.
Inventors
- 👤 Keller Fred
- 👤 Edmund C Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:26
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF SUBSTANTIALLY REDUCING THE GAS CONTENT OF ALUMINUM ARTICLES COMPRISING: COATING THE SURFACE OF AN ALUMINUM ARTICLE CONTAINING GAS WITH AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND CHROMIUM, AND THEREAFTER HEATING SAID COATED ARTICLE IN A GASEOUS ATMOSPHERE AT A TEMPERATURE ABOVE 750*F., BUT BELOW THE TEMPERATURE AT WHICH ANY SUBSTANTIAL AMOUNT OF FUSION OCCURS, FOR A LENGTH OF TIME SUFFICIENT TO DIFFUSE OCCLUDED GAS INTO THE ATMOSPHERE AROUND SAID ARTICLE.
Claim 2
Independent Claim
78 words
THE METHOD OF SUBSTANTIALLY REDUCING THE GAS CONTENT OF ALUMINUM ARTICLES COMPRISING: COATING THE SURFACE OF AN ALUMINUM ARTICLE CONTAINING GAS WITH AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND CHROMIUM, AND THEREAFTER HEATING SAID COATED ARTICLE IN A GASEOUS ATMOSPHERE AT A TEMPERATURE ABOVE 750*F., BUT BELOW THE TEMPERATURE AT WHICH ANY SUBSTANTIAL AMOUNT OF FUSION OCCURS, FOR A LENGTH OF TIME SUFFICIENT TO DIFFUSE OCCLUDED GAS INTO THE ATMOSPHERE AROUND SAID ARTICLE.
References Cited (Backward Citations)
US2761792A
Cited
US2885316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |