US2686714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal powders for magnetic mass cores
Assignee: BASF SE
•
Filing: 1951-12-18
•
Granted: 1954-08-17
•
Expires: 1971-12-18
Abstract
No abstract record available.
Inventors
- 👤 Schlecht Leo
- 👤 Bergmann Friedrich
- 👤 Oestreicher Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:12
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/14708; H01F1/14733; B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METAL POWDER ADAPTED FOR THE PRODUCTION OF MAGNETIC MASS CORES AND CONSISTING ESSENTIALLY OF IRON AND ABOUT 0.5% TO 3.8% OF NICKEL, SAID POWDER BEING PREPARED BY THERMAL DECOMPOSITION OF IRON CARBONYL AND NICKEL CARBONYL IN THE FREE SPACE OF A HEATED VESSEL.
Claim 2
Dependent Claim
44 words
A METAL POWDER ADAPTED FOR THE PRODUCTION OF MAGNETIC MASS CORES AND CONSISTING ESSENTIALLY OF IRON AND ABOUT 0.5% TO 3.8% OF NICKEL, SAID POWDER BEING PREPARED BY THERMAL DECOMPOSITION OF IRON CARBONYL AND NICKEL CARBONYL IN THE FREE SPACE OF A HEATED VESSEL.
References Cited (Backward Citations)
US2041493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |