US3399995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic backing layers for photographic film
Assignee: GAF Corp
•
Filing: 1965-05-06
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Granted: 1968-09-03
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Expires: 1985-05-06
Abstract
No abstract record available.
Inventors
- 👤 Alan M Winchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:51
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; C; C08; C08F; C08F26/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A LIGHT SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A FILM SUPPORT CARRYING A SILVER HALIDE EMULSION LAYER, SAID ELEMENT HAVING AN ANTISTATIC BACKING LAYER COMPRISING A WATER-DISPERSIBLE POLYMER CONSISTING OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF (A) HOMOPOLYMERS OF A VINYLBENZYL QUATERNARY AMMONIUM COMPOUND HAVING THE GENERAL FORMULA: CH2=CH-C6H4-CH2-N(+)(-R)(-R'')-R" Y(-) WHEREIN R, R'' AND R" EACH REPRESENTS INDIVIDUALLY A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
68 words
A LIGHT SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A FILM SUPPORT CARRYING A SILVER HALIDE EMULSION LAYER, SAID ELEMENT HAVING AN ANTISTATIC BACKING LAYER COMPRISING A WATER-DISPERSIBLE POLYMER CONSISTING OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF (A) HOMOPOLYMERS OF A VINYLBENZYL QUATERNARY AMMONIUM COMPOUND HAVING THE GENERAL FORMULA: CH2=CH-C6H4-CH2-N(+)(-R)(-R'')-R" Y(-) WHEREIN R, R'' AND R" EACH REPRESENTS INDIVIDUALLY A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
GB852923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |