US3705060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a semiconductor or thick film device
Assignee: Telefunken Electronic GmbH
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Filing: 1969-12-01
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Granted: 1972-12-05
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Expires: 1989-12-01
Abstract
Abstract A METHOD OF PRODUCING A SEMICONDUCTOR OR THICK FILM DEVICE COMPRISES FORMING A LAYER OF ETCHING RESISTANT, TEMPERATURE RESISTANT AND LIGHT INSENSITIVE PLASTICS MATERIAL ON A CARRIER BODY, SUCH AS AN INSULATING MATERIAL OR SEMICONDUCTOR BODY AND REMOVING PREDETERMINED AREAS OF THE PLASTICS LAYER BY MEANS OF A CONTROLLED ELECTRON BEAM. THE AREAS OF THE CARRIER BODY FROM WHICH THE PLASTICS MATERIAL HAS BEEN REMOVED CAN BE USED FOR THE REMOVAL OF FURTHER MATERIAL, DEPOSITING FURTHER MATERIAL OR THE INTRODUCTION OF FURTHER MATERIAL.
Inventors
- 👤 Fritz Stork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:10
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10N; H10N97/00; H10P; H10P95/00; H10W74/00; H10W74/40; H10W74/47; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S438/00; Y10S438/942; Y10S438/948; Y10S438/949
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |