US3105782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing magnetic material
Assignee: General Electric Co
•
Filing: 1960-10-10
•
Granted: 1963-10-01
•
Expires: 1980-10-10
Abstract
No abstract record available.
Inventors
- 👤 John L Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:50
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/14766; H01F1/14775; C; C21; C21D; C21D8/00; C21D8/12; C21D8/1244; C21D8/1272; C21D1/00; C21D1/74; C21D1/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
THE METHOD OF PRODUCING A BODY CONSISTING ESSENTIALLY OF 7 TO 6 WEIGHT PERCENT SILICON, NOT MORE THAN ABOOUT 0.2 WEIGHT PERCENT INCIDENTAL IMPURITIES, REMAINDER SUBSTANTIALLY ALL IRON AND HAVING A MAJORITY OF THE GRAINS IN A PREFERRED CRYSTALLINE ORIENTATION SELECTED FROM THE GROUP CONSISTING OF (110( 001! AND (100( 001! COMPRISING, FORMING A BODY OF THE ALLOY UP TO ABOUT 15 MILS THICKNESS WHICH CONTAINS NOT MORE THAN ABOUT 0.005 WEIGHT PERCENT OXYGEN, ANNEALING THE BODY AT A TEMPERATURE OF FROM ABOUT 1000*C. TO ABOUT 1350*C. IN A SELECTED ENVIRONMENT FROM THE GROUP CONSISTING OF KRYPTON, ARGON, HYDROGEN AND VACUUM FOR A PERIOD OF TIME CONTROLLING THE AMOUNT OF OXYGEN PRESENT AT THE SURFACE OF THE BODY TO NOT MORE THAN ABOUT 6 P.P.M. TO OBTAIN THE (110) 001! ORIENTATION AND IN EXCESS OF ABOUT 6 P.P.M. UP TO ABOUT 50 P.P.M. TO OBTAIN THE (110) 001! CRYSTALLINE ORIENTATION.
Claim 2
Independent Claim
150 words
THE METHOD OF PRODUCING A BODY CONSISTING ESSENTIALLY OF 7 TO 6 WEIGHT PERCENT SILICON, NOT MORE THAN ABOOUT 0.2 WEIGHT PERCENT INCIDENTAL IMPURITIES, REMAINDER SUBSTANTIALLY ALL IRON AND HAVING A MAJORITY OF THE GRAINS IN A PREFERRED CRYSTALLINE ORIENTATION SELECTED FROM THE GROUP CONSISTING OF (110( 001! AND (100( 001! COMPRISING, FORMING A BODY OF THE ALLOY UP TO ABOUT 15 MILS THICKNESS WHICH CONTAINS NOT MORE THAN ABOUT 0.005 WEIGHT PERCENT OXYGEN, ANNEALING THE BODY AT A TEMPERATURE OF FROM ABOUT 1000*C. TO ABOUT 1350*C. IN A SELECTED ENVIRONMENT FROM THE GROUP CONSISTING OF KRYPTON, ARGON, HYDROGEN AND VACUUM FOR A PERIOD OF TIME CONTROLLING THE AMOUNT OF OXYGEN PRESENT AT THE SURFACE OF THE BODY TO NOT MORE THAN ABOUT 6 P.P.M. TO OBTAIN THE (110) 001! ORIENTATION AND IN EXCESS OF ABOUT 6 P.P.M. UP TO ABOUT 50 P.P.M. TO OBTAIN THE (110) 001! CRYSTALLINE ORIENTATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |