US2825095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing highly permeable dust cores
Assignee: International Standard Electric Corp
•
Filing: 1953-05-21
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Granted: 1958-03-04
•
Expires: 1973-05-21
Abstract
No abstract record available.
Inventors
- 👤 Heck Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:02
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; Y; Y10; Y10S; Y10S75/00; Y10S75/953; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A METHOD OF PRODUCING A FERROMAGNETIC CORE, COMPRISING PROVINDNG HOLLOW DUST-SIZE SHELLS FROM AN ALLOY COMPRISING IRON AND SILICON AND METAL SELECTED FROM THE GROUP CONSISTING OF MANGANESE AND ALUMINUM PRESSING AND MOLDING SAID SHELLS INTO A DESIRED SHAPE.
Claim 2
Independent Claim
39 words
A METHOD OF PRODUCING A FERROMAGNETIC CORE, COMPRISING PROVINDNG HOLLOW DUST-SIZE SHELLS FROM AN ALLOY COMPRISING IRON AND SILICON AND METAL SELECTED FROM THE GROUP CONSISTING OF MANGANESE AND ALUMINUM PRESSING AND MOLDING SAID SHELLS INTO A DESIRED SHAPE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |