US3116159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of fabricating magnetic data storage devices
Assignee: NCR Voyix Corp
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Filing: 1960-05-19
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Granted: 1963-12-31
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Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Robert D Fisher
- 👤 Robert P Williams
- 👤 Frank J Harsacky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:30
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/32; C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/208; C23C18/28; C23C18/285; C23C18/30; C23C18/48; C23C18/50; H01F10/00; H01F41/14; H01F41/24; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/12063; Y10T428/12069; Y10T428/12076; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12868
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
THE PROCESS OF FABRICATING HIGH DENSITY MAGNETIC DATA STORAGE DEVICES COMPRISING THE STEPS OF: APPLYING A HEAT-CURABLE ADHESIVE RESIN COATING TO A CLEANSED NON-METALLIC SUBSTRATE; CHEMICALLY ACTIVATING THE ADHESIVE-COATED SUBSTRATE TO ENABLE THE SUBSTRATE TO RECEIVE A MAGNETIC DEPOSIT BY CHEMICAL REDUCTION; THEREAFTER IMMERSING THE SUBSTRATE IN AN AQUEOUS BATH SOLUTION HAVING A PH IN THE RANGE OF 7.6 TO 8.2 AND INCLUDING AS ESSENTIAL CONSTITUENTS NICKEL IONS OF A CONCENTRATION IN THE RANGE OF 0.20 TO 0.62 GRAM/LITER, COBALT IONS OF A CONCENTRATION SUBSTANTIALLY EQUAL TO 6 TIMES THE NICKEL ION CONCENTRATION, AMMONIUM IONS OF A CONCENTRATION IN THE RANGE OF 1.7 TO 17 GRAMS/LITER, CITRATE INS OF A CONCENTRATIN IN THE RANGE OF 3.2 TO 64 GRAMS/LITER AND HYPOPHOSPHITE IONS OF A CONCENTRATION IN THE RANGE OF 0.30 TO 6.1 GRAMS/LITER, AND MAINTAINING SAID SUBSTRATE IN SAID BATH SOLUTION FOR A TIME TO EFFECT CHEMICAL REDUCTION OF A NICKEL-COBALT DEPOSIT ON SAID SUBSTRATE HAVING A COERCIVE FORCE OF AT LEAST 200 OERSTEDS.
Claim 2
Dependent Claim
164 words
THE PROCESS OF FABRICATING HIGH DENSITY MAGNETIC DATA STORAGE DEVICES COMPRISING THE STEPS OF: APPLYING A HEAT-CURABLE ADHESIVE RESIN COATING TO A CLEANSED NON-METALLIC SUBSTRATE; CHEMICALLY ACTIVATING THE ADHESIVE-COATED SUBSTRATE TO ENABLE THE SUBSTRATE TO RECEIVE A MAGNETIC DEPOSIT BY CHEMICAL REDUCTION; THEREAFTER IMMERSING THE SUBSTRATE IN AN AQUEOUS BATH SOLUTION HAVING A PH IN THE RANGE OF 7.6 TO 8.2 AND INCLUDING AS ESSENTIAL CONSTITUENTS NICKEL IONS OF A CONCENTRATION IN THE RANGE OF 0.20 TO 0.62 GRAM/LITER, COBALT IONS OF A CONCENTRATION SUBSTANTIALLY EQUAL TO 6 TIMES THE NICKEL ION CONCENTRATION, AMMONIUM IONS OF A CONCENTRATION IN THE RANGE OF 1.7 TO 17 GRAMS/LITER, CITRATE INS OF A CONCENTRATIN IN THE RANGE OF 3.2 TO 64 GRAMS/LITER AND HYPOPHOSPHITE IONS OF A CONCENTRATION IN THE RANGE OF 0.30 TO 6.1 GRAMS/LITER, AND MAINTAINING SAID SUBSTRATE IN SAID BATH SOLUTION FOR A TIME TO EFFECT CHEMICAL REDUCTION OF A NICKEL-COBALT DEPOSIT ON SAID SUBSTRATE HAVING A COERCIVE FORCE OF AT LEAST 200 OERSTEDS.
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |