Patent US3443944A successfully refreshed from Google Patents.
US3443944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of depositing conductive patterns on a substrate
Assignee: RTX Corp
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Filing: 1963-10-23
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Granted: 1969-05-13
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Ann R Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:11
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K2203/00; H05K2203/05; H05K2203/0502; H05K2203/0514; H05K2203/0548; H05K2203/056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF PRODUCING A PATTERN OF CONDUCTIVE MATERIAL ON A CARRIER INCLUDING APPLYING A THIN FILM OF CLEAR PHOTO-RESIST TO SAID CARRIER, APPLYING A LAYER OF THE MIXTURE OF A MINOR AMOUNT OF FINELY DIVIEDED METAL AND A MAJOR AMOUNT OF PHOTO-RESIST TO SAID FILM EXPOSING SAID LAYERS TO LIGHT IN THE DESIRED PATTERN, REMOVING THE SAID METAL AND PHOTO-RESIST IN THE UNEXPOSED AREAS AND THEN SUBJECTING THE REMAINING MATERIALS TO HEAT TO REMOVE THE PHOTO-RESIST COMPONENTS AND TO FORM THE DESIRED PATTERN OF METAL.
Claim 2
Independent Claim
86 words
A METHOD OF PRODUCING A PATTERN OF CONDUCTIVE MATERIAL ON A CARRIER INCLUDING APPLYING A THIN FILM OF CLEAR PHOTO-RESIST TO SAID CARRIER, APPLYING A LAYER OF THE MIXTURE OF A MINOR AMOUNT OF FINELY DIVIEDED METAL AND A MAJOR AMOUNT OF PHOTO-RESIST TO SAID FILM EXPOSING SAID LAYERS TO LIGHT IN THE DESIRED PATTERN, REMOVING THE SAID METAL AND PHOTO-RESIST IN THE UNEXPOSED AREAS AND THEN SUBJECTING THE REMAINING MATERIALS TO HEAT TO REMOVE THE PHOTO-RESIST COMPONENTS AND TO FORM THE DESIRED PATTERN OF METAL.
References Cited (Backward Citations)
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Cited
US2195531A
Cited
US2443119A
Cited
US2585700A
Cited
US2914404A
Cited
US2897089A
Cited
US3146368A
Cited
US3222173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |