Patent US2879154A successfully refreshed from Google Patents.
US2879154A
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Acicular metal particles and method of making the same
Assignee: Franklin Institute
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Filing: 1956-10-02
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Granted: 1959-03-24
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Expires: 1976-10-02
Abstract
No abstract record available.
Inventors
- 👤 Robert B Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:04
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F1/00; B22F1/06; B22F1/062; B22F9/22; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A MICROSCOPIC, ACICULAR, MONOCRYSTALLINE IRON PARTICLE.
Claim 2
Dependent Claim
6 words
A MICROSCOPIC, ACICULAR, MONOCRYSTALLINE IRON PARTICLE.
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |