US3759711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Er compositions and elements nitrogen linked apperding quinone diazide light sensitive vinyl polym
Assignee: Eastman Kodak Co
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Filing: 1970-09-16
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Granted: 1973-09-18
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Expires: 1990-09-16
Abstract
Abstract A LIGHT SENSITIVE POLYMER HAVING QUINONE DIAZIDE GROUPS LINKED THROUGH NITROGEN ATOMS TO THE POLYMER CHAIN IS PARTICULARLY USEFUL IN PHOTORESIST COMPOSITIONS AND FOR LITHOGRAPHIC PURPOSES.
Inventors
- 👤 F Rauner
- 👤 R Engebrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:30
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F8/30; G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/023
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |