US3583940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers derived from acrylyl-substituted alkoxy stilbenes
Assignee: Pharmacia and Upjohn Co
•
Filing: 1969-10-06
•
Granted: 1971-06-08
•
Expires: 1989-10-06
Abstract
Abstract STILBENES OF THE FORMULA: (LOWER ALKOXY)N,(CH2=C(-R)-(COO-A-O)M-CO-NH-PHENYLENE- CH=CH-)-BENZENE WHEREIN N IS AN INTEGER FROM 1 TO 3, M IS AN INTEGER FROM 0 TO 1, A IS LOWER-ALKYLENE AND R IS HYDROGEN OR LOWERALKYL, ARE DISCLOSED, AS WELL AS HOMOPOLYMERS OF SAID COMPOUNDS, AND COPOLYMERS OF SAID COMPOUNDS WITH MONOMERS CONTAINING A POLYMERIZABLE CH2=C<. THE ABOVE STILBENES AND THE POLYMERS DERIVED THEREFROM ARE PHOTOSENSITIVE AND CAN BE USED IN THE PREPARATION OF PHOTORESIST SYSTEMS.
Inventors
- 👤 Durvasula V Rao
- 👤 Henri Ulrich
- 👤 Fred A Stuber
- 👤 Adnan A R Sayigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C07; C07C; C07C205/00; C07C205/49; C07C205/56; C07C265/00; C07C265/12; C08; C08F; C08F2/00; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/52; C08F20/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |