US2948706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensttive high molecular compounds
Assignee: Bayer AG
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Filing: 1956-12-18
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Granted: 1960-08-09
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Expires: 1976-12-18
Abstract
No abstract record available.
Inventors
- 👤 Schellenberg Wolf-Dietrich
- 👤 Bartl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; C; C08; C08F; C08F8/00; C08F8/28; C08G; C08G63/00; C08G63/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A METHOD FOR MAKING A LIGHT-SENSITIVE COMPOUND WHICH COMPRISES REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF GELATIN, CELLULOSE AND SYNTHETIC RESINOUS ORGANIC COMPOUNDS HAVING AT LEAST ONE GROUP SELECTED FROM THE CLASS CONSISTING OF -NCO GROUPS AND GROUPS REACTIVE WITH -NCO GROUPS CONTAINING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD AND A KETONE HAVING A PHENYL RADICAL AND A STYRYL RADICAL JOINED BY A KETONE GROUP, SAID KETONE HAVING AT LEAST ONE GROUP SELECTED FROM THE CLASS CONSISTING OF AN -NCO GROUP AND A GROUP REACTIVE WITH -NCO GROUPS CONTAINING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD ATTACHED TO AN AROMATIC RING WITH THE PROVISO THAT SAID KETONE CONTAINS A GROUP CONTAINING REACTIVE HYDROGEN WHEN SAID ORGANIC COMPOUND CONTAINS AN -NCO GROUP AND SAID KETONE CONTAINS AN -NCO GROUP WHEN SAID ORGANIC COMPOUND CONTAINS A GROUP CONTAINING REACTIVE HYDROGEN.
Claim 2
Independent Claim
143 words
A METHOD FOR MAKING A LIGHT-SENSITIVE COMPOUND WHICH COMPRISES REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF GELATIN, CELLULOSE AND SYNTHETIC RESINOUS ORGANIC COMPOUNDS HAVING AT LEAST ONE GROUP SELECTED FROM THE CLASS CONSISTING OF -NCO GROUPS AND GROUPS REACTIVE WITH -NCO GROUPS CONTAINING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD AND A KETONE HAVING A PHENYL RADICAL AND A STYRYL RADICAL JOINED BY A KETONE GROUP, SAID KETONE HAVING AT LEAST ONE GROUP SELECTED FROM THE CLASS CONSISTING OF AN -NCO GROUP AND A GROUP REACTIVE WITH -NCO GROUPS CONTAINING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD ATTACHED TO AN AROMATIC RING WITH THE PROVISO THAT SAID KETONE CONTAINS A GROUP CONTAINING REACTIVE HYDROGEN WHEN SAID ORGANIC COMPOUND CONTAINS AN -NCO GROUP AND SAID KETONE CONTAINS AN -NCO GROUP WHEN SAID ORGANIC COMPOUND CONTAINS A GROUP CONTAINING REACTIVE HYDROGEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |