US3030307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrite material containing lithium and aluminum oxides
Assignee: GTE Sylvania Inc
•
Filing: 1958-04-29
•
Granted: 1962-04-17
•
Expires: 1978-04-29
Abstract
No abstract record available.
Inventors
- 👤 Donald H Baird
- 👤 Dymon Joseph John
- 👤 Natansohn Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:22
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2616
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A FERRITE MATERIAL COMPOSED OF LI2O, MNO, FE2O3 AND AL2O3 AND DEFINED BY THE APPROAXIMATE FORMULA (W)LI2O+(X)FE2O3+(Y)AL2O3+(Z)MNO, WHEREIN THE QUANTITIES W, X, Y AND Z ARE MOLE ATIOS, THE QUANTITY W BEING APPROXIMATELY EQUAL TO 0.25, THE QUANTITY (X+Y) FALLING WITHIN THE APPROXIMATE RANGE 1.20 AND 1.25 AND THE QUANTITY Z FALLING WITHIN THE APPROXIMATE RANGE 0.000.10, THE RATIO Y/X FALLYING WITHIN THE APPROXIMATE RANGE 0.044-0.40, SAID MATERIAL HAIVNG A SATURATION MAGNETIZATION FALLING WITHIN THE RANGE 200-3500 GAUSS AND A CURIE TEMPERATURE FALLING WITHIN THE RANGE 350-625*C.
Claim 2
Dependent Claim
87 words
A FERRITE MATERIAL COMPOSED OF LI2O, MNO, FE2O3 AND AL2O3 AND DEFINED BY THE APPROAXIMATE FORMULA (W)LI2O+(X)FE2O3+(Y)AL2O3+(Z)MNO, WHEREIN THE QUANTITIES W, X, Y AND Z ARE MOLE ATIOS, THE QUANTITY W BEING APPROXIMATELY EQUAL TO 0.25, THE QUANTITY (X+Y) FALLING WITHIN THE APPROXIMATE RANGE 1.20 AND 1.25 AND THE QUANTITY Z FALLING WITHIN THE APPROXIMATE RANGE 0.000.10, THE RATIO Y/X FALLYING WITHIN THE APPROXIMATE RANGE 0.044-0.40, SAID MATERIAL HAIVNG A SATURATION MAGNETIZATION FALLING WITHIN THE RANGE 200-3500 GAUSS AND A CURIE TEMPERATURE FALLING WITHIN THE RANGE 350-625*C.
References Cited (Backward Citations)
US2576456A
Cited
US2565861A
Cited
US2549089A
Cited
US2736708A
Cited
BE521341A
Cited
US2851419A
Cited
GB754370A
Cited
FR1115324A
Cited
US2882234A
Cited
US2882235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |