US3671312A
Expired / Lapsed
US
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Method for manufacturing magnetic thin film element
Assignee: Toshiba Corp
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Filing: 1970-07-29
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Granted: 1972-06-20
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Expires: 1990-07-29
Abstract
Abstract A METHOD FOR VAPOR DEPOSITING A MAGNETIC THIN FILM ELEMENT MAINLY COMPRISING NICKEL NI AND IRON FE ON THE SURFACE OF A SUBSTRATE WITHIN A MAGENTIC FIELD IN AN ATOMSPHERE OF INERT GAS AT A PRESSURE OF 1X10**-3 TO 5X10**-2 MM. HG, TO FORM A UNIFORM MAGNETIC THIN FILM WITH REDUCED VARIATIONS IN THE DIRECTION OF THE EASY AXIS.
Inventors
- 👤 Yoshio Murakami
- 👤 Iwao Higashinakagawa
- 👤 Nobuaki Yasuda
- 👤 Syozo Takeno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:10
CPC Classifications
H; H01; H01F; H01F10/00; H01F10/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |