Patent US2644787A successfully refreshed from Google Patents.
US2644787A
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Electrodeposition of a magnetic coating
Assignee: Eckert Mauchly Computer Corp
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Filing: 1950-01-05
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Granted: 1953-07-07
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Expires: 1970-01-05
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Bonn
- 👤 Jr Douglas Cary Wendell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:20
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/562; C23; C23C; C23C18/00; C23C18/16; C23C18/48; C23C18/50; G; G11; G11B; G11B5/00; G11B5/62; G11B5/64; G11B5/65; G11B5/657; H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; H01F41/26; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928; Y10S428/9335; Y10S428/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD FOR THE DEPOSITION OF MAGNETIC COATING ON AN ELECTRICALLY CONDUCTIVE CARRIER COMPRISING SUBJECTING SAID CARRIER AS CATHODE TO AT LEAST PARTIAL ELECTROLYTIC ACTION IN AN AQUEOUS BATH HAVING A PH IN THE RANGE OF 2 TO 6 AND INCLUDING AS ESSENTIAL CONSTITUENTS NICKEL IONS IN A CONCENTRATION IN THE RANGE 0.2 TO 1,7N, COBALT IONS IN A CONCENTRATION IN THE RANGE 0.2 TO 1.ON, AND HYPOPHOSPHITE IONS IN A CONCENTRATION IN THE RANGE 0.04 TO 0.2N, SAID ELECTROLYTIC ACTION BEING IN THE PRESENCE OF THE REDUCING ACTION OF THE HYPOPHOSPHITE IONS ON THE COBALT AND NICKEL IONS.
Claim 2
Independent Claim
99 words
THE METHOD FOR THE DEPOSITION OF MAGNETIC COATING ON AN ELECTRICALLY CONDUCTIVE CARRIER COMPRISING SUBJECTING SAID CARRIER AS CATHODE TO AT LEAST PARTIAL ELECTROLYTIC ACTION IN AN AQUEOUS BATH HAVING A PH IN THE RANGE OF 2 TO 6 AND INCLUDING AS ESSENTIAL CONSTITUENTS NICKEL IONS IN A CONCENTRATION IN THE RANGE 0.2 TO 1,7N, COBALT IONS IN A CONCENTRATION IN THE RANGE 0.2 TO 1.ON, AND HYPOPHOSPHITE IONS IN A CONCENTRATION IN THE RANGE 0.04 TO 0.2N, SAID ELECTROLYTIC ACTION BEING IN THE PRESENCE OF THE REDUCING ACTION OF THE HYPOPHOSPHITE IONS ON THE COBALT AND NICKEL IONS.
References Cited (Backward Citations)
US2430581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |