Patent US2587614A successfully refreshed from Google Patents.
US2587614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal powder
Assignee: Individual
•
Filing: 1949-09-29
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Granted: 1952-03-04
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Expires: 1969-09-29
Abstract
No abstract record available.
Inventors
- 👤 Henry A Golwynne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:48
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
APPARATUS FOR PRODUCING METAL POWDER BY ATOMIZING A BODY OF MOLTEN METAL INTO VERY FINELY DIVIDED PARTICLES AND FREEZING THE PARTICLES INTO POWDER WITH A GAS SUBSTANTIALLY INERT TO THE METAL, THE MAIN BODY OF GAS BEING CONFINED IN A MAIN CIRCULATORY SYSTEM UNDER PRESSURE HIGHER THAN ATMOSPHERIC TO PREVENT INGRESS OF OUTSIDE AIR,THE IMPROVEMENT COMPRISING A PURIFIER FOR REMOVING SUCH IMPURITIES AS OXYGEN AND NITROGEN FROM THE GAS TO RENDER IT PRACTICALLY INERT TO THE METAL, A BY-PASS CONDUIT CONNECTING THE MAIN CIRCULATORY SYSTEM WITH THE INLET OF THE PURIFIER FOR THE WITHDRAWAL OF GAS FROM THE MAIN CIRCULATORY SYSTEM AND ITS PASSAGE THROUGH THE PURIFIER, AND A CONDUIT CONNECTING THE OUTLET OF THE PURIFIER WITH THE MAIN CIRCULATORY SYSTEM FOR RETURNING GAS SO PURIFIED TO THE MAIN CIRCULATORY SYSTEM.
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) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |