US3812162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azides
Assignee: International Business Machines Corp
•
Filing: 1972-05-15
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Granted: 1974-05-21
•
Expires: 1992-05-15
Abstract
Abstract LIGHT SENSITIVE PHOTORESIST COMPOSITIONS PARTICULARLY USEFUL FOR PROJECTION EXPOSURE APPLICATIONS INCLUDE A PHOTOCROSSLINKABLE POLYMER AND NOVEL SENSITIZERS WHICH ARE BIS-P-AZIDO CINNAMYLIDENE DERIVATIVES OF CYCLIC AND LINEAR KETONES.
Inventors
- 👤 W Moreau
- 👤 N Clecak
- 👤 R Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:04
CPC Classifications
C; C07; C07C; C07C247/00; G; G03; G03F; G03F7/00; G03F7/004; G03F7/008
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |