Patent US3021230A successfully refreshed from Google Patents.
US3021230A
Expired / Lapsed
US
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Apparatus and method for magnetically orienting particles
Assignee: Eastman Kodak Co
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Filing: 1959-04-17
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Granted: 1962-02-13
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Expires: 1979-04-17
Abstract
No abstract record available.
Inventors
- 👤 Deriaud Jean-Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:50
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0007; G11B5/00; G11B5/84; G11B5/852; Y; Y10; Y10S; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF TRANSVERSELY ORIENTING MAGNETIC PARTICLES LOOSELY SECURED TO A CARRIER STRIP BY A HARDENABLE BINDER WHICH COMPRISES MOVING SAID STRIP, PRIOR TO HARDENING OF SAID BINDER, IN THE DIRECTION OF ITS LENGTH PAST AND CLOSE TO A PLURALITY OF REGIONS OF HIGH MAGNETIC PERMEABLITY SPACED LATERALLY FROM ONE ANOTHER IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF MOVEMENT OF SAID STRIP WHILE SUBJECTING SAID REGIONS TO A MAGENTIC FIELD HAVING ITS FIELD DIRECTION EXTENDING FROM SIDE TO SIDE OF SAID STRIP ACROSS SAID PLURALITY OF REGIONS TO INDUCE MAGNETIC FLUX THEREIN.
Claim 2
Independent Claim
94 words
THE METHOD OF TRANSVERSELY ORIENTING MAGNETIC PARTICLES LOOSELY SECURED TO A CARRIER STRIP BY A HARDENABLE BINDER WHICH COMPRISES MOVING SAID STRIP, PRIOR TO HARDENING OF SAID BINDER, IN THE DIRECTION OF ITS LENGTH PAST AND CLOSE TO A PLURALITY OF REGIONS OF HIGH MAGNETIC PERMEABLITY SPACED LATERALLY FROM ONE ANOTHER IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF MOVEMENT OF SAID STRIP WHILE SUBJECTING SAID REGIONS TO A MAGENTIC FIELD HAVING ITS FIELD DIRECTION EXTENDING FROM SIDE TO SIDE OF SAID STRIP ACROSS SAID PLURALITY OF REGIONS TO INDUCE MAGNETIC FLUX THEREIN.
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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |