US3627862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of metal powder
Assignee: Huntington Alloys Corp
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Filing: 1969-05-15
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Granted: 1971-12-14
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Expires: 1989-05-15
Abstract
Abstract Mixtures of at least two finely divided soft metal powders, e.g., nickel, cobalt, iron and copper powders, are agglomerated by ball milling the powders in a vibratory mill at temperatures between about 40* C. and 200* C. and in a nonoxidizing atmosphere.
Inventors
- 👤 De Witt Henry West
- 👤 Alexander Bowen Simpson
- 👤 Ross Lowndes Simms
- 👤 Reginald David Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:58
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
20 words
A process according to claim 1 in which the atmosphere is reducing to the oxides of the metals being milled.
Claim 2
Dependent Claim
12 words
A process according to claim 1 in which the atmosphere is hydrogen.
Claim 3
Dependent Claim
16 words
A process according to claim 1 in which the atmosphere is passed continuously through the mill.
Claim 4
Dependent Claim
18 words
A process according to claim 1 in which the temperature is between about 50* C. and 150* C.
Claim 5
Dependent Claim
25 words
A process according to claim 1 in which the initial particle size of the metal powders being milled does not exceed about 350 mesh BSS.
Claim 6
Dependent Claim
17 words
A process according to claim 1 in which one of the metal powders is carbonyl nickel powder.
References Cited (Backward Citations)
US2853767A
Cited
US3445555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |