Patent US3801368A successfully refreshed from Google Patents.
US3801368A
Expired / Lapsed
US
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Process of electroless plating and article made thereby
Assignee: Toray Industries Inc
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Filing: 1971-11-23
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Granted: 1974-04-02
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Expires: 1991-11-23
Abstract
Abstract An electroless plating method is provided in which palladium or gold is deposited on a substrate in vacuo and thereafter the substrate is electrolessly plated using the previously deposited palladium or gold as the catalyst.
Inventors
- 👤 Takeo Fusayama
- 👤 Kenji Hayashi
- 👤 Yoshio Asamizu
- 👤 Meitaro Endo
- 👤 Yasuo Shinohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:45
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/18; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/2006; C23C18/1601; C23C18/1633; C23C18/1646; C23C18/165; C23C18/31; C23C18/32; C23C18/34; C23C18/36; C23C18/48; C23C28/00; C23C28/02; C23C28/023; G; G11; G11B; G11B5/00; G11B5/84; G11B5/851; G11B5/858; C23C18/1603; C23C18/1605
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
21 words
The process according to claim 1 wherein said magnetic recording media is a magnetic recording tape or a magnetic recording disc.
Claim 2
Dependent Claim
31 words
The process according to claim 1 wherein pattern type deposition of palladium on said substrate is electrolessly plated with a magnetic metal to obtain a pattern type magnetic metal plated article.
Claim 3
Dependent Claim
13 words
The process according to claim 1 wherein the said magnetic metal is cobalt.
Claim 4
Dependent Claim
32 words
The electroless plating process according to claim 1 wherein said substrate is an organic substrate, an inorganic substrate or a composite thereof and is an electrical insulator, electrical semi-conductive or electrical conductive.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |