US3305380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic film having uniformly variable hk and method therefor
Assignee: Unisys Corp
•
Filing: 1963-04-08
•
Granted: 1967-02-21
•
Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Adomines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:51
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF PRODUCING A THIN MAGNETIC FILM HAVING A SUBSTANTIALLY UNIFORMLY VARYING VALUE OF HK, COMPRISING THE STEPS OF PREPARING A MAGNETIZABLE MATERIAL SUITABLE FOR PLATIN SUBSTRATES AND CHARACTERIZED BY A LARGE COEFFICIENT OF MAGNETOSTRICTION, DEFORMING A FLAT SUBSTRATE BASE SUCH THAT A SUBSTANTIALLY LUNIFORMLY VARYING RADIUS OF CURVATURE IS EXHIBITED BETWEEN THE ENDS THEREOF, AFFIXING A THIN LAYER OF MAGNETIZABLE MATERIAL TO THE SUBSTRATE BASE, AND RETURNING SAID SUBSTRATE BASE TO SAID FLAT CONFIGURATION WHEREBY THE MAGNETIZABLE MATERIAL AFFIXED TO THE SUBSTRATE BASE IS SUBJECTED TO A STRESS THEREIN.
Claim 2
Independent Claim
91 words
A METHOD OF PRODUCING A THIN MAGNETIC FILM HAVING A SUBSTANTIALLY UNIFORMLY VARYING VALUE OF HK, COMPRISING THE STEPS OF PREPARING A MAGNETIZABLE MATERIAL SUITABLE FOR PLATIN SUBSTRATES AND CHARACTERIZED BY A LARGE COEFFICIENT OF MAGNETOSTRICTION, DEFORMING A FLAT SUBSTRATE BASE SUCH THAT A SUBSTANTIALLY LUNIFORMLY VARYING RADIUS OF CURVATURE IS EXHIBITED BETWEEN THE ENDS THEREOF, AFFIXING A THIN LAYER OF MAGNETIZABLE MATERIAL TO THE SUBSTRATE BASE, AND RETURNING SAID SUBSTRATE BASE TO SAID FLAT CONFIGURATION WHEREBY THE MAGNETIZABLE MATERIAL AFFIXED TO THE SUBSTRATE BASE IS SUBJECTED TO A STRESS 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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |