Patent US3764325A successfully refreshed from Google Patents.
US3764325A
Expired / Lapsed
US
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Method for making electrical monograin layer
Assignee: US Philips Corp
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Filing: 1966-08-01
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Granted: 1973-10-09
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Expires: 1986-08-01
Abstract
Abstract A METHOD OF MAKING AN ELECTRICAL MONOGRAIN LAYER DEVICE IN WHICH THE LAYER OF GRAINS, USUALLY OF SEMICONDUCTIVE MATERIAL, ARE EMBEDDED IN A PHOTORESIST LAYER, WHICH IS THEN EXPOSED THROUGH THE GRAINS AND DEVELOPED. THE PHOTORESIST PORTIONS SHADOWED BY THE GRAINS REMAIN UNEXPOSED AND ARE REMOVED BY THE DEVELOPER, WHEREAS THE RISIST PORTIONS EXTENDING BETWEEN THE GRAINS AND EXPOSED BECOME HARDENED AND BIND THE GRAINS TOGETHER. THE EXPOSED GRAIN SURFACE PORTIONS ARE THEN CONTACTED WITH AN ELECTRODE.
Inventors
- 👤 Velde T Te
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:26
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20; Y; Y10; Y10S; Y10S148/00; Y10S148/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |