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US2728693A
Expired / Lapsed
US
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Method of forming electrical conductor upon an insulating base
Assignee: Motorola Solutions Inc
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Filing: 1953-08-24
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Granted: 1955-12-27
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Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Erwin E Cado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:30
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/048; H05K3/10; H05K3/108; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0344; H05K2203/00; H05K2203/02; H05K2203/025; H05K2203/05; H05K2203/0502; H05K2203/054; H05K2203/07; H05K2203/0736; H05K2203/0743; H05K3/18; H05K3/181; H05K3/182; H05K3/184; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD OF FORMING AN ELECTRIC CONDUCTOR ON AN INSULATING BASE WHICH COMPRISES THE FOLLOWING STEPS, APPLYING A SOLUBLE NON-CONDUCTIVE BASE MATERIAL OVER AT LEAST PORTIONS OF AT LEAST ONE SURFACE OF THE BASE, APPLYING A PERVIOUS MATALLIC COATING OVER THE SURFACE OF THE BASE AT LEAST PARTIALLY COVERED BY SAID BASE MATERIAL, FORMING A SOLUBLE RESIST OVER THE PORTIONS OF SAID METALLIC COATING UPON WHICH NO CONDUCTOR IS TO APPEAR, APPLYING AN IMPERVIOUS METALLIC COATING OVER THE REMAINING PORTIONS OF SAID PERVIOUS METALLIC COATING, AND DISSOLVING SAID RESIST AND PORTION OF SAID BASE MATERIAL COVERED BY THE PORTIONS OF SAID PERVIOUS METALLIC COATING DIRECTLY UNDER SAID RESIST AND FLOATING OFF SAID LAST NAMED PORTIONS OF SAID PERVIOUS METALLIC COATING.
Claim 2
Independent Claim
120 words
A METHOD OF FORMING AN ELECTRIC CONDUCTOR ON AN INSULATING BASE WHICH COMPRISES THE FOLLOWING STEPS, APPLYING A SOLUBLE NON-CONDUCTIVE BASE MATERIAL OVER AT LEAST PORTIONS OF AT LEAST ONE SURFACE OF THE BASE, APPLYING A PERVIOUS MATALLIC COATING OVER THE SURFACE OF THE BASE AT LEAST PARTIALLY COVERED BY SAID BASE MATERIAL, FORMING A SOLUBLE RESIST OVER THE PORTIONS OF SAID METALLIC COATING UPON WHICH NO CONDUCTOR IS TO APPEAR, APPLYING AN IMPERVIOUS METALLIC COATING OVER THE REMAINING PORTIONS OF SAID PERVIOUS METALLIC COATING, AND DISSOLVING SAID RESIST AND PORTION OF SAID BASE MATERIAL COVERED BY THE PORTIONS OF SAID PERVIOUS METALLIC COATING DIRECTLY UNDER SAID RESIST AND FLOATING OFF SAID LAST NAMED PORTIONS OF SAID PERVIOUS METALLIC COATING.
References Cited (Backward Citations)
US2447836A
Cited
US2443119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |