US3427134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferromagnetic compounds and method of preparation
Assignee: International Business Machines Corp
•
Filing: 1963-08-01
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Granted: 1969-02-11
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Expires: 1983-08-01
Abstract
No abstract record available.
Inventors
- 👤 Frederic Holtzberg
- 👤 Siegfried J Methfessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:48
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/40; C; C22; C22C; C22C28/00; H01F1/03; H01F1/032; H01F1/04; H01F1/047; H01F1/053
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
38 words
A RARE EARTH COMPOUND HAVING A FORMULA A4M3 WHEREIN A IS A RARE EARTH SELECTED FROM THE GROUP CONSISTING OF GD, TB, AND DY AND M IS A METALLOID DELECTED FROM THE GROUP CONSISTING OF SB AND BI.
Claim 2
Dependent Claim
38 words
A RARE EARTH COMPOUND HAVING A FORMULA A4M3 WHEREIN A IS A RARE EARTH SELECTED FROM THE GROUP CONSISTING OF GD, TB, AND DY AND M IS A METALLOID DELECTED FROM THE GROUP CONSISTING OF SB AND BI.
Claim 3
Dependent Claim
34 words
A RARE EARTH SOLID SOLUTION SYSTEM HAVING A FORMULA (AYA''L-Y)4(SBXBIL-X)3 WHEREIN A AND A'' ARE RARE EARTHS SELECTED FROM THE GROUP CONSISTING OF GD, TB, AND DY AND EACH IS DIFFERENT; 1>Y>0 AND 1>X>0.
Claim 4
Dependent Claim
34 words
A RARE EARTH SOLID SOLUTION SYSTEM HAVING A FORMULA (AYA''L-Y)4(SBXBIL-X)3 WHEREIN A AND A'' ARE RARE EARTHS SELECTED FROM THE GROUP CONSISTING OF GD, TB, AND DY AND EACH IS DIFFERENT; 1>Y>0 AND 1>X>0.
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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |