US3829316A
Expired / Lapsed
US
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Method for the preparation of metallic layers on a substrate
Assignee: Siemens AG
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Filing: 1971-12-29
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Granted: 1974-08-13
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Expires: 1991-12-29
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF METALLIC LAYERS ON A SUBSTRATE. PARTS OF THE MASKING LAYER AND THE NOT NEEDED METALLIC LAYER ARE SIMULTANEOUSLY REMOVED. THE PROCESS IS PARTICULLARLY SUITABLE FOR PREPARING ELECTRICAL CIRCUITS ON CERAMIC SUBSTRATES.
Inventors
- 👤 W Huber
- 👤 H Hagen
- 👤 P Guglhor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:53
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H10; H10W; H10W70/00; H10W70/01; H10W70/05; H10W70/60; H10W70/62; H10W70/66; H05K2203/00; H05K2203/07; H05K2203/0779; H05K2203/0783; H05K3/061; H05K3/064; H10W72/00; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |