US3741802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing magnetic devices utilizing garnet epitaxial materials
Assignee: AT&T Inc
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Filing: 1971-04-12
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Granted: 1973-06-26
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Expires: 1991-04-12
Abstract
Abstract DEVICE PROPERTIES OF HETEROEPITAXIAL GARENT FILMS EVIDENCING GROTH-INDUCED MAGNETIC ANISOTROPY INTENDED FOR USED IN MAGNETIC DEVICES PERFORMING THE FUNCTIONS OF STORAGE, SWITCHING LIGHT DEFLECTION, ETC., ARE IMPROVED BY ANNEALING FOR CRITICAL PERIODS OVER THE TEMPERATURE RANGE OF FROM ABOUT 1200*C. TO 1350*C.
Inventors
- 👤 F Hagedorn
- 👤 A Kurtzig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:41
CPC Classifications
H; H01; H01F; H01F10/00; H01F10/08; H01F10/10; H01F10/18; H01F10/20; H01F10/24
Claims Analysis
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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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |