US3397988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic material
Assignee: Gevaert Photo Producten NV
•
Filing: 1964-01-24
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Granted: 1968-08-20
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Expires: 1984-01-24
Abstract
No abstract record available.
Inventors
- 👤 August Jean Van Paesschen
- 👤 Marcel Nicolas Vrancken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:18
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT AND AT LEAST ONE LAYER THEREON, SAID LAYER CONTAINING AS BINDER MATERIAL A MIXTURE CONSISTING ESSENTIALLY OF GELATIN AND A LATEX OF A COPOLYMER OF BUTADIENE AND A LOWER ESTER OF ACRYLIC OR METHACRYLIC ACID, WATERC AND AN ANIONIC OR NONIONIC EMULSIFYING AGENT, THE AMOUNT OF SAID CO-POLYMER BEING NOT GREATER THAN ABOUT 80% BY WEIGHT OF SAID BINDER MIXTURE.
Claim 2
Dependent Claim
65 words
PHOTOGRAPHIC MATERIAL COMPRISING A SUPPORT AND AT LEAST ONE LAYER THEREON, SAID LAYER CONTAINING AS BINDER MATERIAL A MIXTURE CONSISTING ESSENTIALLY OF GELATIN AND A LATEX OF A COPOLYMER OF BUTADIENE AND A LOWER ESTER OF ACRYLIC OR METHACRYLIC ACID, WATERC AND AN ANIONIC OR NONIONIC EMULSIFYING AGENT, THE AMOUNT OF SAID CO-POLYMER BEING NOT GREATER THAN ABOUT 80% BY WEIGHT OF SAID BINDER MIXTURE.
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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |