US3102028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element having a stripping or antihalation layer comprising a resinous carboxy ester-lactone
Assignee: Eastman Kodak Co
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Filing: 1961-10-16
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Granted: 1963-08-27
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Louis M Minsk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/805; G03C1/7614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A PHOTOGRAPHIC ELEMENT COMPRISING A TRANSPARENT, FLEXIBLE SUPPORT HAVING AT LEAST ONE LIGHT-SENSITIVE LAYER ON ONE SIDE AND A NON-SENSITIVE BACKING LAYER ON THE OTHER SIDE COMPRISING A RESINOUS MIXED ESTER-LACTONE CONTAINING -COOCNH2NCOOH GROUPS, -COOCNH2NCOOR GROUPS, -COOH GROUPS AND -COOR GROUPS ATTACHED DIRECTLY TO THE CARBON CHAIN OF THE SAID LACTONE, WHEREIN N AND R OF SAID GROUPS ARE AS DEFINED BELOW AND WHEREIN THE TOTAL FREE CARBOXYL PRESENT ARE EQUIVALENT TO FORM 4.06.0 MIS. N NAOH/GRAM OF THE SAID LACTONE, WHICH IS THE PRODUCT OBTAINED BY HEATING TO AT LEAST 60*C. IN THE PRESENCE OF A MINERAL ACID, A MIXTURE COMPRISING (1) FROM 15-30% BY WEIGHT OF AN INTERPOLYMER OF A VINYL ORGANIC ACID ESTER AND AN UNSATURATED A,B-DICARBOXYLIC ACID COMPOUND FROM THE GROUP CONSISTING OF MALEIC ACID, CITRACONIE ACID, DIMETHYLMALEIC ACID AND ANHYDRIDES AND ALKYL ESTERS OF 1-4 CARBON ATOMS THEREOF, FURMARIC ACID, MESACONIC ACID, DIMETHYLFUMARIC ACID AND ALKYL ESTERS OF 1-4 CARBON ATOMS THEREOF, (2) FROM 35-65% BY WEIGHT OF A MONOHYDRIC HYDROXY ACID OF THE FORMULA
Claim 2
Dependent Claim
170 words
A PHOTOGRAPHIC ELEMENT COMPRISING A TRANSPARENT, FLEXIBLE SUPPORT HAVING AT LEAST ONE LIGHT-SENSITIVE LAYER ON ONE SIDE AND A NON-SENSITIVE BACKING LAYER ON THE OTHER SIDE COMPRISING A RESINOUS MIXED ESTER-LACTONE CONTAINING -COOCNH2NCOOH GROUPS, -COOCNH2NCOOR GROUPS, -COOH GROUPS AND -COOR GROUPS ATTACHED DIRECTLY TO THE CARBON CHAIN OF THE SAID LACTONE, WHEREIN N AND R OF SAID GROUPS ARE AS DEFINED BELOW AND WHEREIN THE TOTAL FREE CARBOXYL PRESENT ARE EQUIVALENT TO FORM 4.06.0 MIS. N NAOH/GRAM OF THE SAID LACTONE, WHICH IS THE PRODUCT OBTAINED BY HEATING TO AT LEAST 60*C. IN THE PRESENCE OF A MINERAL ACID, A MIXTURE COMPRISING (1) FROM 15-30% BY WEIGHT OF AN INTERPOLYMER OF A VINYL ORGANIC ACID ESTER AND AN UNSATURATED A,B-DICARBOXYLIC ACID COMPOUND FROM THE GROUP CONSISTING OF MALEIC ACID, CITRACONIE ACID, DIMETHYLMALEIC ACID AND ANHYDRIDES AND ALKYL ESTERS OF 1-4 CARBON ATOMS THEREOF, FURMARIC ACID, MESACONIC ACID, DIMETHYLFUMARIC ACID AND ALKYL ESTERS OF 1-4 CARBON ATOMS THEREOF, (2) FROM 35-65% BY WEIGHT OF A MONOHYDRIC HYDROXY ACID OF THE FORMULA
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |