Patent US3234610A successfully refreshed from Google Patents.
Patent US2969281A successfully refreshed from Google Patents.
US2969281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making spherical metal particles
Assignee: Cyprus Amax Minerals Co
•
Filing: 1958-01-17
•
Granted: 1961-01-24
•
Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Walter T Monson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:00
CPC Classifications
B; B22; B22F; B22F1/00; B22F1/06; B22F1/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE PROCESS OF PRODUCING SPHERICAL METALLIC PARTICLES FROM IRREGULAR SHAPED METALLIC PARTICLES WHICH COMPRISES UNIFORMLY DISPERSING SAID IRREGULAR PARTICLES IN A LOOSELY PACKED MATRIX MATERIAL WHICH IS CHEMICALY UNREACTIVE WITH THE METAL PARTICLES AND HAS A SOFTENING TEMPERATURE ABOVE THE MELTING POINT OF SAID METALLIC PARTICLES TO PROVIDE A SUSPENSION OF SAID IRREGULAR METALLIC PARTICLES IN THE MATRIX MATERIAL HEATING SAID SUSPENSION TO A TEMPERATURE BELOW THE MELTING POINT OF SAID PARTICLES SAID TEMPERATURE BEING SUFFICIENT TO SPHERIFY THE IRREGULAR METALLIC PARTICLES IN THE ABSENCE OF COMBUSTION OF SAID MATRIC MATERIAL, COOLING SAID SUSPENSIJO, AND SEPARATING THE SPHERIFIED METALLIC PARTICLES FROM THE MATRIX MATERIAL.
Claim 2
Dependent Claim
104 words
THE PROCESS OF PRODUCING SPHERICAL METALLIC PARTICLES FROM IRREGULAR SHAPED METALLIC PARTICLES WHICH COMPRISES UNIFORMLY DISPERSING SAID IRREGULAR PARTICLES IN A LOOSELY PACKED MATRIX MATERIAL WHICH IS CHEMICALY UNREACTIVE WITH THE METAL PARTICLES AND HAS A SOFTENING TEMPERATURE ABOVE THE MELTING POINT OF SAID METALLIC PARTICLES TO PROVIDE A SUSPENSION OF SAID IRREGULAR METALLIC PARTICLES IN THE MATRIX MATERIAL HEATING SAID SUSPENSION TO A TEMPERATURE BELOW THE MELTING POINT OF SAID PARTICLES SAID TEMPERATURE BEING SUFFICIENT TO SPHERIFY THE IRREGULAR METALLIC PARTICLES IN THE ABSENCE OF COMBUSTION OF SAID MATRIC MATERIAL, COOLING SAID SUSPENSIJO, AND SEPARATING THE SPHERIFIED METALLIC PARTICLES FROM THE MATRIX MATERIAL.
References Cited (Backward Citations)
US857756A
Cited
US1717160A
Cited
US2038251A
Cited
GB486778A
Cited
US2461011A
Cited
US2460977A
Cited
GB731504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |