US2630623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a die-expressed article of a magnesium-base alloy
Assignee: Dow Chemical Co
•
Filing: 1948-11-12
•
Granted: 1953-03-10
•
Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Douglas S Chisholm
- 👤 Robert S Busk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:19
CPC Classifications
B; B22; B22F; B22F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
THE METHOD OF MAKING A DIE-EXPRESSED ARTICLE OF A MAGNESIUM-BASE ALLOY CONTAINING AT LEAST ABOUT 80 PER CENT OF MAGNESIUM AND COMPRISING A SOLID SOLUTION IN THE MAGNESIUM OF ALLOYED METAL IN THE AMOUNT OF AT LEAST ABOUT 0.3 PER CENT BY WEIGHT WHICH COMPRISES ATOMIZING THE ALLOY SO AS TO CONVERT THE SAME INTO A MASS OF FINE INDIVIDUALLY FROZEN PARTICLES HAVING A MICROSTRUCTURE OF FINE MICROINHOMOGENEOUS GRAINS BETWEEN ABOUT 0.0001 AND 0.02 INCH IN DIAMETER COMPOSED OF CORED DENDRITES OF SOLID SOLUTION, HEATING THE MASS OF AS-ATOMIZED ALLOY TO A TEMPERATURE WITHIN THE RANGE OF PLASTIC DEFORMATION TEMPERATURE OF THE ALLOY, APPLYING PRESSURE UPON THE HEATED MASS SO AS TO COMPACT THE SAME, AND RAM EXTRUDING THE RESULTING COMPACTED MASS AT A TEMPERATURE WITHIN THE AFORESAID RANGE, THE REDUCTION IN CROSS SECTIONAL AREA OF THE COMPACTED MASS EFFECTED BY THE RAM-EXTRUSION BEING AT LEAST ABOUT 80 PER CENT, AND SAID HEATING, COMPACTING, AND RAM-EXTRUDING OPERATIONS BEING COMPLETED WITHIN A MATTER OF MINUTES SO AS TO PRESERVE SUBSTANTIALLY THE MICROINHOMOGENEITY OF THE AS-ATOMIZED ALLOY.
Claim 2
Independent Claim
175 words
THE METHOD OF MAKING A DIE-EXPRESSED ARTICLE OF A MAGNESIUM-BASE ALLOY CONTAINING AT LEAST ABOUT 80 PER CENT OF MAGNESIUM AND COMPRISING A SOLID SOLUTION IN THE MAGNESIUM OF ALLOYED METAL IN THE AMOUNT OF AT LEAST ABOUT 0.3 PER CENT BY WEIGHT WHICH COMPRISES ATOMIZING THE ALLOY SO AS TO CONVERT THE SAME INTO A MASS OF FINE INDIVIDUALLY FROZEN PARTICLES HAVING A MICROSTRUCTURE OF FINE MICROINHOMOGENEOUS GRAINS BETWEEN ABOUT 0.0001 AND 0.02 INCH IN DIAMETER COMPOSED OF CORED DENDRITES OF SOLID SOLUTION, HEATING THE MASS OF AS-ATOMIZED ALLOY TO A TEMPERATURE WITHIN THE RANGE OF PLASTIC DEFORMATION TEMPERATURE OF THE ALLOY, APPLYING PRESSURE UPON THE HEATED MASS SO AS TO COMPACT THE SAME, AND RAM EXTRUDING THE RESULTING COMPACTED MASS AT A TEMPERATURE WITHIN THE AFORESAID RANGE, THE REDUCTION IN CROSS SECTIONAL AREA OF THE COMPACTED MASS EFFECTED BY THE RAM-EXTRUSION BEING AT LEAST ABOUT 80 PER CENT, AND SAID HEATING, COMPACTING, AND RAM-EXTRUDING OPERATIONS BEING COMPLETED WITHIN A MATTER OF MINUTES SO AS TO PRESERVE SUBSTANTIALLY THE MICROINHOMOGENEITY OF THE AS-ATOMIZED ALLOY.
References Cited (Backward Citations)
US1902905A
Cited
US2371105A
Cited
US1570868A
Cited
US1594347A
Cited
US2023366A
Cited
US2380722A
Cited
US2391752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |