US3269854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of rendering substrates catalytic to electroless cobalt deposition and article produced
Assignee: 3M Co
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Filing: 1963-05-16
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Granted: 1966-08-30
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jacob D Hei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:48
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/30; C23C18/31; C23C18/32; C23C18/34; C23C18/36; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10S428/9335; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/1209; Y10T428/12306; Y10T428/12319; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12771; Y10T428/12861; Y10T428/12875
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A MAGNETIC INFORMATION STORAGE MEDIUM COMPRISING A SUBSTRATE HAVING A THIN, CONTINUOUS, METALLIC COBALT MAGNETIC LAYER CONDED TO ONE SURFACE THEREOF, MICROSCOPIC GRAINS OF A METAL CATALYTIC TO AN ELECTROLESS COBALT PLATING SOLUTION AT THE INTERFACE BETWEEN SAID SUBSTRATE AND SAID COBALT LAYER, AND AT LEAST ONE STARTA OF MICROSCOPIC GRAINS OF A METAL CATALYTIC TO AN ELECTROLESS COBALT PLATING SOLUTION IN SAID COBALT LAYER.
Claim 2
Dependent Claim
65 words
A MAGNETIC INFORMATION STORAGE MEDIUM COMPRISING A SUBSTRATE HAVING A THIN, CONTINUOUS, METALLIC COBALT MAGNETIC LAYER CONDED TO ONE SURFACE THEREOF, MICROSCOPIC GRAINS OF A METAL CATALYTIC TO AN ELECTROLESS COBALT PLATING SOLUTION AT THE INTERFACE BETWEEN SAID SUBSTRATE AND SAID COBALT LAYER, AND AT LEAST ONE STARTA OF MICROSCOPIC GRAINS OF A METAL CATALYTIC TO AN ELECTROLESS COBALT PLATING SOLUTION IN SAID COBALT LAYER.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |