Patent USRE26850E successfully refreshed from Google Patents.
US3333334A
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Method of making magnetic body with pattern of imbedded non-magnetic material
Assignee: RCA Corp
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Filing: 1963-10-23
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Granted: 1967-08-01
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Kuliczkowski
- 👤 Wentworth Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:10
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/16; G; G11; G11B; G11B5/00; G11B5/62; H01F1/00; H01F1/01; H01F1/03; H01F1/0302; H01F1/0311; H01F10/00; H01F10/08; H01F10/10; H01F10/18; H01F10/20; H05; H05K; H05K1/00; H05K1/16; H05K1/165; H05K3/00; H05K3/10; H05K3/102; H05K3/12; H05K3/1258; H05K1/02; H05K1/03; H05K1/0306; H05K1/09; H05K1/092; H05K2201/00; H05K2201/08; H05K2201/083; H05K2201/086; H05K2201/09; H05K2201/09009; H05K2201/09036; H05K2203/00; H05K2203/11; H05K2203/1131; H05K3/107; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49075; Y10T29/49076; Y10T29/4998
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A METHOD OF FORMING A BODY OF MAGNETIC MATERIAL FROM TWO GREEN FERRITE SHEETS ONE OF WHICH HAS A SURFACE WITH A DEPRESSION PATTERN CORRESPONDING WITH A DESIRED PATTERN OF IMBEDDED NON-MAGNETIC CONDUCTIVE MATERIAL, THE STEPS OF APPLYING A LAYER OF A SLURRY TO SAID SURFACE OF THE ONE GREEN FERRITE SHEET, SAID SLURRY INCLUDING NON-MAGNETIC CONDUCTIVE PARTICLES WHICH HAVE DIMENSIONS IN THE RANGE OF ABOUT 0.5 TO 5 MICRONS AND WHICH ARE MIXED IN AN AQUEOUS SOLUTION HAVING, BY WEIGHT, 0.1 TO 2 PERCENT OF A WETTING AGENT AND 2 TO 20 PERCENT OF A CARBONACEOUS BINDER COMPRISING ABOUT 99 PERCENT GRANULATED SUGAR AND 1 PERCENT HONEY, ALLOWING THE SLURRY TO DRY LEAVING LIGHTLY-BOUND NONMAGNETIC CONDUCTIVE PARTICLES ON SAID SURFACE AND IN SAID DEPRESSIONS, BRUSHING THE PARTICLES FROM SAID SURFACE LEAVING THE DEPRESSIONS FILLED WITH PARTICLES, AND LAMINATING AND FIRING THE TWO FERRITE SHEETS TO DRIVE OFF THE BINDER AND FORM A HOMOGENEOUS BODY OF SINTERED MAGNETIC FERRITE HAVING AN IMBEDDED PATTERN OF COMPACTED NON-MAGNETIC CONDUCTIVE PARTICLES.
Claim 2
Dependent Claim
169 words
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
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |