US3565779A
Expired / Lapsed
US
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Irradiation cross linked copolymers of n-substituted amides of unsaturated carboxylic acids containing aceto or benzophenone groups
Assignee: Hoechst AG
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Filing: 1968-01-10
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Granted: 1971-02-23
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Expires: 1988-01-10
Abstract
Abstract COPOLYMERS OF OLEFINICALLY UNSATURATED COMPOUNDS AND LIGHT-SENSITIVE, N-SUBSTITUTED AMIDES OF UNSATURATED CARBOXYLIC ACIDS CONTAINING ACETO- OR BENZOPHENONE GROUPS ARE PREPARED AND SUBSEQUENTLY CROSS-LINKED BY THE ACTION OF LIGHT.
Inventors
- 👤 Walter Luders
- 👤 Gunter Messwarb
- 👤 Hartmut Steppan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:16
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28; C08F; C08F291/00; C08F291/18; Y; Y10; Y10S; Y10S522/00; Y10S522/904; Y10S522/905
Claims Analysis
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |