US2967351A
Expired / Lapsed
US
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Method of making an aluminum base alloy article
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1956-12-14
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Granted: 1961-01-10
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Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 Sidney G Roberts
- 👤 Maurice C Fetzer
- 👤 James B Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:29
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; C; C22; C22F; C22F1/00; C22F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF PRODUCING METAL ARTICLES COMPRISING THE STEPS OF PREPARING A MELT OF AN ALUMINUM BASE ALLOY CONTAINING ALLOYING ADDITIONS OF METALS IN AMOUNTS WHICH UNDER CONDITIONS OF PRODUCTION HERETOFORE KNOWN WOULD FORM COARSE PRIMARY CRYSTALS OF INTERMEDIATE PHASES WITH ALUMINUM OR OTHER ALLOYING ADDITIONS AND CAUSE SEVERE CHEMICAL SEGREGATION DURING SOLIDIFICATION, HEATING SAID MELT TO A TEMPERATURE AT WHICH IT IS A HOMOGENEOUS LIQUID SOLUTION, COMMINUTING SAID HOMOGENEOUS LIQUID
Claim 2
Independent Claim
71 words
A METHOD OF PRODUCING METAL ARTICLES COMPRISING THE STEPS OF PREPARING A MELT OF AN ALUMINUM BASE ALLOY CONTAINING ALLOYING ADDITIONS OF METALS IN AMOUNTS WHICH UNDER CONDITIONS OF PRODUCTION HERETOFORE KNOWN WOULD FORM COARSE PRIMARY CRYSTALS OF INTERMEDIATE PHASES WITH ALUMINUM OR OTHER ALLOYING ADDITIONS AND CAUSE SEVERE CHEMICAL SEGREGATION DURING SOLIDIFICATION, HEATING SAID MELT TO A TEMPERATURE AT WHICH IT IS A HOMOGENEOUS LIQUID SOLUTION, COMMINUTING SAID HOMOGENEOUS LIQUID
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |