US3291625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose acetate solutions and the manufacture of self-sustaining films therefrom
Assignee: Ferrania SpA
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Filing: 1962-06-07
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Granted: 1966-12-13
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Expires: 1982-06-07
Abstract
No abstract record available.
Inventors
- 👤 Faraone Giovanni
- 👤 Giorgetti Alessandro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:09
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/10; C08L1/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A METHLENE CHLORIDE SOLUTION OF CELLULOSE ACETATE HAVING AN ACETYL CONTENT OF ABOUT 42.5 TO 44%, CAPABLE OF BEING RAPIDLY FORMED INTO A FILM OF LOW FLAMMABILITY, AND CONTAINING 5 TO 25% BY WEIGHT OF SUCROSE OCTADIPHENYL PHOSPHATE, BASED ON THE WEIGHT OF THE CELLOSE ACETATE.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |