US2937964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic flake core
Assignee: Individual
•
Filing: 1957-07-23
•
Granted: 1960-05-24
•
Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Adams Edmond
- 👤 William M Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:20
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0433; B; B22; B22F; B22F1/00; B22F1/16; B22F9/00; B22F9/02; B22F9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF MAKING A MAGNETIC CORE CHARACTERIZED BY A HIGH MAGNETIC PERMEABILITY WHICH COMPRISES THE PROCESS FOR FORMING A MAGNETIC CORE COMPOSED OF FLAT INSULATED PARTICLES, OF AN ALLOY CONTAINING ABOUT 2% MOLYBDENUM THE REMAINDER ESSENTIALLY NICKEL-IRON, COMPRESSED IN SUBSTANTIALLY PARALLEL LAYERS, ANNEALING THE CORE IN A HYDROGEN ATMOSPHERE, AND THEREAFTER IMMEDIATELY SUBJECTING THE CORE TO AN AIR ATMOSPHERE FOR RAPID COOLING IN AIR.
Claim 2
Independent Claim
65 words
THE METHOD OF MAKING A MAGNETIC CORE CHARACTERIZED BY A HIGH MAGNETIC PERMEABILITY WHICH COMPRISES THE PROCESS FOR FORMING A MAGNETIC CORE COMPOSED OF FLAT INSULATED PARTICLES, OF AN ALLOY CONTAINING ABOUT 2% MOLYBDENUM THE REMAINDER ESSENTIALLY NICKEL-IRON, COMPRESSED IN SUBSTANTIALLY PARALLEL LAYERS, ANNEALING THE CORE IN A HYDROGEN ATMOSPHERE, AND THEREAFTER IMMEDIATELY SUBJECTING THE CORE TO AN AIR ATMOSPHERE FOR RAPID COOLING IN AIR.
References Cited (Backward Citations)
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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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |