US3047475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing magnetic materials
Assignee: Unisys Corp
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Filing: 1958-09-25
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Granted: 1962-07-31
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Expires: 1978-09-25
Abstract
No abstract record available.
Inventors
- 👤 Wilbur G Hespenheide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:48
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; H01F41/26; C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/562
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE PROCESS COMPRISING ELECTRODEPOSITING A MAGNETIC NICKEL-IRON ALLOY HAVING A COERCIVE FORCE OF NOT MORE THAN 10 OERSTEDS FROM AN AQUEOUS BATH WHOSE CONTENT OF METALLIC CATIONS CONSISTS OF BETWEEN 5 AND 150 GRAMS PER LITER OF IRON AS DISSOLVED IRON SULFAMATE AND BETWEEN 6 AND 77 GRAMS PER LITER OF NICKEL AS DISSOLVED NICKEL SULFAMATE, HAVING A PH BETWEEN 1.5 AND 4.0, AT A TEMPERATURE BETWEEN 70 AND 200 DEGREES FAHRENHEIT, UPON A CATHODE OPERATING AT A CURRENT DENSITY BETWEEN 0.17 AMPERE PER SQUARE INCH AND 10.0 AMPERES PER SQUARE INCH.
Claim 2
Dependent Claim
92 words
THE PROCESS COMPRISING ELECTRODEPOSITING A MAGNETIC NICKEL-IRON ALLOY HAVING A COERCIVE FORCE OF NOT MORE THAN 10 OERSTEDS FROM AN AQUEOUS BATH WHOSE CONTENT OF METALLIC CATIONS CONSISTS OF BETWEEN 5 AND 150 GRAMS PER LITER OF IRON AS DISSOLVED IRON SULFAMATE AND BETWEEN 6 AND 77 GRAMS PER LITER OF NICKEL AS DISSOLVED NICKEL SULFAMATE, HAVING A PH BETWEEN 1.5 AND 4.0, AT A TEMPERATURE BETWEEN 70 AND 200 DEGREES FAHRENHEIT, UPON A CATHODE OPERATING AT A CURRENT DENSITY BETWEEN 0.17 AMPERE PER SQUARE INCH AND 10.0 AMPERES PER SQUARE INCH.
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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |