Patent US3448053A successfully refreshed from Google Patents.
US3448053A
Expired / Lapsed
US
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Novel single phase quaternary magnetic compounds
Assignee: Wyeth Holdings LLC
•
Filing: 1966-11-22
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Granted: 1969-06-03
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Expires: 1986-11-22
Abstract
No abstract record available.
Inventors
- 👤 Gottfried Haacke
- 👤 Lindley Clair Beegle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:10
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/40; H01F1/401; H01F1/407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A SEMI-CONDUCTING, MAGNETIC, SINGLE PHASE SPINEL STRUCTURE HAVING THE FORMULA:
Claim 2
Dependent Claim
10 words
A SEMI-CONDUCTING, MAGNETIC, SINGLE PHASE SPINEL STRUCTURE HAVING THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |