US3023165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium ferrite containing aluminum and method of making same
Assignee: AT&T Inc
•
Filing: 1956-08-17
•
Granted: 1962-02-27
•
Expires: 1976-08-17
Abstract
No abstract record available.
Inventors
- 👤 Le Grand G Van Uitert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:28
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/165; H01P1/175; C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2625
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A MAGNESIUM FERRITE OF THE GENERAL COMPOSITION MG1AL.05-0.2MN.01-.2FE1-2OX, IN WHICH GENERAL FORMULA THE MAXIMUM AMOUNT OF MANGANESE PRESENT IS 10 ATOMIC PERCENT OF THE AMOUNT OF IRON AND IN WHICH GENERAL FORMULA THE TOTAL NUMBER OF ATOMS OF IRON, MANGANESE AND ALUMINUM IS LESS THAN 2 BY A MAXIMUM AMOUNT OF 10 PERCENT IN ACCORDANCE WITH THE FRACTION
References Cited (Backward Citations)
US2452531A
Cited
US2576456A
Cited
US2565058A
Cited
US2565111A
Cited
US2671884A
Cited
US2719274A
Cited
US2692978A
Cited
GB697219A
Cited
FR1074864A
Cited
US2715109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |