Patent US3272727A successfully refreshed from Google Patents.
US3272727A
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Process for electroplating magnetic alloy onto a platinized chromium substrate
Assignee: International Business Machines Corp
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Filing: 1962-08-23
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Granted: 1966-09-13
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Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Arnold F Schmeckenbecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:32
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/38; C25D5/40; H; H01; H01F; H01F10/00; H01F10/08; H01F10/10; H01F10/12; H01F10/14; H01F41/00; H01F41/14; H01F41/24; H01F41/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF FABRICATING BISTABLE MAGNETIC FILMS HAVING HIGH SPEED MAGNETIC SWITCHING CHARACTERISTICS COMPRISING: TREATING A CHROMIUM SUBSTRATE LAYER WITH A SOLUTION CONTAINING FROM 0.001 TO 10 PERCENT BY WEIGHT OF CHLOROPLATINIC ACID FOR A TIME OF LESS THAN ABOUT 30 MINUTES TO PRODUCE A THIN FILM OF PLATINUM OVER SAID SUBSTRATE LAYER; AND ELECTROPLATING A MAGNETIC NICKEL-IRON ALLOY FILM HAVING A THICKNESS OF THOUSANDS OF ANGSTROM UNITS OVER SAID CHROMIUM LAYER WHILE APPLYING A UNIAXIAL ORIENTING MAGNETIC FIELD AT THE SURFACE OF SAID CHROMIUM LAYER.
Claim 2
Independent Claim
86 words
A METHOD OF FABRICATING BISTABLE MAGNETIC FILMS HAVING HIGH SPEED MAGNETIC SWITCHING CHARACTERISTICS COMPRISING: TREATING A CHROMIUM SUBSTRATE LAYER WITH A SOLUTION CONTAINING FROM 0.001 TO 10 PERCENT BY WEIGHT OF CHLOROPLATINIC ACID FOR A TIME OF LESS THAN ABOUT 30 MINUTES TO PRODUCE A THIN FILM OF PLATINUM OVER SAID SUBSTRATE LAYER; AND ELECTROPLATING A MAGNETIC NICKEL-IRON ALLOY FILM HAVING A THICKNESS OF THOUSANDS OF ANGSTROM UNITS OVER SAID CHROMIUM LAYER WHILE APPLYING A UNIAXIAL ORIENTING MAGNETIC FIELD AT THE SURFACE OF SAID CHROMIUM LAYER.
References Cited (Backward Citations)
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US3047475A
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |