US3234053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved method forming aluminum magnesium sheet
Assignee: Olin Corp
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Filing: 1963-05-14
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Granted: 1966-02-08
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Expires: 1983-05-14
Abstract
No abstract record available.
Inventors
- 👤 Michael J Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:21
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04; C22F1/047; Y; Y10; Y10S; Y10S148/00; Y10S148/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A PROCESS OF PRODUCING AN ALUMINUM-MAGNESIUM SHEET HAVING A HIGH THERMAL CONDUCTIVITY AND HAVING MAGNESIUM PRESENT IN THE FORM OF AT LEAST ONE PRECIPITATED INTERMETALLIC MAGNESIUM COMPOUND UNFORMLY DISPERSED IN FINE PARTICLE SIZE IN A SURFACE LAYER OF SAID SHEET, SAID PROCESS COMPRISING THE STEPS OF A. PROVIDING A SHEET OF ALUMINUM-MAGNESIUM ALLOY HAVING MAGNESIUM IN THE FORM OF AT LEAST ONE INTERMETALLIC MAGNESIUM COMPOUND AS A SOLUBLE CONSTITUENT OF SAID ALLOY, B. DISSOLVING SAID CONSTITUENT INTO SOLD SOLUTION IN SAID ALLOY BY HEATING SAID SHEET, C. ESTABLISHING A THERMAL GRADIENT THROUGH THE THICKNESS OF SAID SHEET CHARACTERIZED BY DEVELOPING IN SURFACE LAYER ONLY OF SAID SHEET, A TEMPERATURE LOWER THAN THAT DEVELOPED IN THE REMAINDER OF THE THICKNESS OF SAID SHEET, AND D. PRECIPITATING SAID CONSTITUENT THROUGHT THE CONJOINT ACTION OF SAID THERMAL GRADIENT AND MECHANICAL DEFORMATION TO PRODUCE, IN SAID SURFACE LAY ONLY, A FINE PARTICLE SIZE UNIFORM DISPERSION OF SAD CONSTITUENT AND A COARSE PARTICULATE DISPERSION OF SAID CONSTITUENT IN SAID REMAINDER OF THE THICKNESS OF SAID SHEET.
Claim 2
Dependent Claim
171 words
A PROCESS OF PRODUCING AN ALUMINUM-MAGNESIUM SHEET HAVING A HIGH THERMAL CONDUCTIVITY AND HAVING MAGNESIUM PRESENT IN THE FORM OF AT LEAST ONE PRECIPITATED INTERMETALLIC MAGNESIUM COMPOUND UNFORMLY DISPERSED IN FINE PARTICLE SIZE IN A SURFACE LAYER OF SAID SHEET, SAID PROCESS COMPRISING THE STEPS OF A. PROVIDING A SHEET OF ALUMINUM-MAGNESIUM ALLOY HAVING MAGNESIUM IN THE FORM OF AT LEAST ONE INTERMETALLIC MAGNESIUM COMPOUND AS A SOLUBLE CONSTITUENT OF SAID ALLOY, B. DISSOLVING SAID CONSTITUENT INTO SOLD SOLUTION IN SAID ALLOY BY HEATING SAID SHEET, C. ESTABLISHING A THERMAL GRADIENT THROUGH THE THICKNESS OF SAID SHEET CHARACTERIZED BY DEVELOPING IN SURFACE LAYER ONLY OF SAID SHEET, A TEMPERATURE LOWER THAN THAT DEVELOPED IN THE REMAINDER OF THE THICKNESS OF SAID SHEET, AND D. PRECIPITATING SAID CONSTITUENT THROUGHT THE CONJOINT ACTION OF SAID THERMAL GRADIENT AND MECHANICAL DEFORMATION TO PRODUCE, IN SAID SURFACE LAY ONLY, A FINE PARTICLE SIZE UNIFORM DISPERSION OF SAD CONSTITUENT AND A COARSE PARTICULATE DISPERSION OF SAID CONSTITUENT IN SAID REMAINDER OF THE THICKNESS OF SAID SHEET.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |