US2819984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerated cellulose packaging materials and process of making same
Assignee: EIDP Inc
•
Filing: 1954-11-22
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Granted: 1958-01-14
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Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Hervey Winfield Ackerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/048; C08J7/052; C08J2301/00; C08J2301/06; C08J2427/00; C08J2427/02; C08J2427/04; C08J2427/08; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PACKAGING FILM COMPRISING A BASE FILM OF REGENERATED CELLFFIULOSE HAVING AT LEAST ONE SURFACE COATED WITH A SUBCOATING COMPRISING A COPOLYMER OBTAINED FROM UP TO 70% OF VINYLIDENE CHLORIDE AND 30-100% OF AN ALKYL ACRYLATE, WHEREIN THE ALKYL GROUP CONTAINS AT LEAST 2 CARBON ATOMS AND A TOP COATING COMPRISING A COPOLYMER OBTAINED FROM 80-97% VINYLIDENE CHLORIDE AND FROM 320% OF AT LEAST ONE POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE WITH VINYLIDENE CHLORIDE.
Claim 2
Dependent Claim
72 words
A PACKAGING FILM COMPRISING A BASE FILM OF REGENERATED CELLFFIULOSE HAVING AT LEAST ONE SURFACE COATED WITH A SUBCOATING COMPRISING A COPOLYMER OBTAINED FROM UP TO 70% OF VINYLIDENE CHLORIDE AND 30-100% OF AN ALKYL ACRYLATE, WHEREIN THE ALKYL GROUP CONTAINS AT LEAST 2 CARBON ATOMS AND A TOP COATING COMPRISING A COPOLYMER OBTAINED FROM 80-97% VINYLIDENE CHLORIDE AND FROM 320% OF AT LEAST ONE POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE WITH VINYLIDENE CHLORIDE.
References Cited (Backward Citations)
CA500178A
Cited
US2698240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |