US3369933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of metallic salts by amine oxide pyrolysis
Assignee: Ashland LLC
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Filing: 1964-01-17
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Granted: 1968-02-20
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Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Garson P Shulman
- 👤 Edward B Dunning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:26
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1633; C23C18/1655; C23C18/1657; C23C18/31; C23C18/42; C23C18/44; C23C18/52; G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/4989; H05K2203/00; H05K2203/11; H05K2203/1105; H05K2203/1157; H05K2203/12; H05K2203/125; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
A PROCESS FOR THE PRODUCTION OF PRINTED ELECTRICAL CIRCUITS ON A BASE MEDIUM COMPRISING FORMING ON A BASE MEDIUM AN INTIMATE ADMIXTURE OF A REDUCIBLE METALLIC SALT AND A TERTIARY AMINE OXIDE, PLACING A PATTERN CONFORMING TO THE DESIRED ELECTRICAL CIRCUIT BETWEEN SAID BASE
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |