US2618568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-extinguishing cellulose acetate molding compositions
Assignee: Eastman Kodak Co
•
Filing: 1949-09-16
•
Granted: 1952-11-18
•
Expires: 1969-09-16
Abstract
No abstract record available.
Inventors
- 👤 Lester W A Meyer
- 👤 William M Gearhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A CELLULOSE ACETATE COMPOSITION WHICH IS TRANSLUCENT, SELF-EXTINGUISHING WHEN IGNITED, AND SUFFICIENTLY STABLE AT HIGH TEMPERATURES TO PERMIT OF BEING MOLDED WITHOUT DECOMPOSITION OF ANY OF THE COMPONENTS, COMPRISING 100 PARTS BY WEIGHT OF CELLULOSE ACETATE, FROM 20 TO 70 PARTS OF A MIXTURE A PLASTICIZERS WHICH INCLUDES FROM 17 TO 50 PARTS OF TRIMONOCHLOROETHYL PHOSPHATE, NO PLASTICIZER MORE FLAMMABLE THAN CELLULOSE ACETATE BEING PRESENT, AND 3 PARTS OF NORMAL LEAD MALEATE.
Claim 2
Dependent Claim
72 words
A CELLULOSE ACETATE COMPOSITION WHICH IS TRANSLUCENT, SELF-EXTINGUISHING WHEN IGNITED, AND SUFFICIENTLY STABLE AT HIGH TEMPERATURES TO PERMIT OF BEING MOLDED WITHOUT DECOMPOSITION OF ANY OF THE COMPONENTS, COMPRISING 100 PARTS BY WEIGHT OF CELLULOSE ACETATE, FROM 20 TO 70 PARTS OF A MIXTURE A PLASTICIZERS WHICH INCLUDES FROM 17 TO 50 PARTS OF TRIMONOCHLOROETHYL PHOSPHATE, NO PLASTICIZER MORE FLAMMABLE THAN CELLULOSE ACETATE BEING PRESENT, AND 3 PARTS OF NORMAL LEAD MALEATE.
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) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |