US3756788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated magnetic material
Assignee: Individual
•
Filing: 1970-10-12
•
Granted: 1973-09-04
•
Expires: 1990-10-12
Abstract
Abstract AN EXTRUSION BELLET IS FABRICATED FROM LAYERS OF SOFT MAGNETIC MATERIAL SEPARATED BY ONE OR MORE METAL LAYERS. THE BILLET IS COREDUCED AND HEAT TREATED TO IMPART THE DESIRED MAGNETIC PROPERTIES TO THE SOFT MAGNETIC MATERIAL AND ALSO TO FORM INTERMETALLIC INSULATING LAYERS BETWEEN THE MAGNETIC LAYERS. ELECTRIC FIELD SHIELD SECTIONS ARE FORMED IN A SIMILAR MANNER BY PLACING RELATIVELY THICK LAYERS OF COOPER BETWEEN ADJACENT LAYERS OF METAL LOCATED ADJACENT THE LAYERS OF SOFT MAGNETIC MATERIAL.
Inventors
- 👤 C Whetstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; H01F41/00; H01F41/02; H01F41/0206; H01F41/0233; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10S428/926; Y10S428/9265; Y10S428/931; Y10S428/9335; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12778; Y10T428/12806; Y10T428/12812; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/12944
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |