US2884319A
Expired / Lapsed
US
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Acicular metal particles from metal carbonyls and method of preparation
Assignee: ThyssenKrupp Budd Co
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Filing: 1956-11-27
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Granted: 1959-04-28
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Expires: 1976-11-27
Abstract
No abstract record available.
Inventors
- 👤 Robert W Fabian
- 👤 John L Sienczyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:23
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; H01F1/065; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
THE PROCESS OF FORMING ACICULAR METAL PARTICLES WHICH PROCESS COMPRISES THERMALLY DECOMPOSING A CARBONYL COMPOUND OF A MAGNETIC METAL IN THE PRESENCE OF A SUBSTANTIAL, CONTROLLED, LOCAL UNIDIRECTIONAL MAGNETIC FIELD TO CAUSE AGGREGATION OF THE DECOMPOSITION PRODUCT ALONG LINES OF MAGNETIC FLUX.
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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |