US2819985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerated cellulose packaging materials and process
Assignee: EIDP Inc
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Filing: 1954-12-09
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Granted: 1958-01-14
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Expires: 1974-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter Herbert Cobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:48
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/048; C08J7/052; C08J2301/00; C08J2301/06; C08J2425/00; C08J2425/02; C08J2425/04; C08J2425/08; C08J2427/00; C08J2427/02; C08J2427/04; C08J2427/08; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31533; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31888; Y10T428/31909; Y10T428/31913; Y10T428/31924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PACKAGING FILM COMPRISING A BASE FILM OF REGENERATED CELLULOSE HAVING AT LEAST ONE SURFACE COATED WITH A SUBCOATING COMPRISING AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF ELASTOPRENE, ELASTOLENE AND ELASTOTHIOMER, AND A TOP COATING COMPRISING A COPOLYMER OBTAINED FROM 80-97% VINYLIDENE CHLORIDE AND 3-20% OF AT LEAST ONE OTHER POLYMERIZABLE MONO-OLEFINIC OMONOMER COPOLYMERIZABLE WITH VINYLIDENE CHLORIDE.
Claim 2
Dependent Claim
58 words
A PACKAGING FILM COMPRISING A BASE FILM OF REGENERATED CELLULOSE HAVING AT LEAST ONE SURFACE COATED WITH A SUBCOATING COMPRISING AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF ELASTOPRENE, ELASTOLENE AND ELASTOTHIOMER, AND A TOP COATING COMPRISING A COPOLYMER OBTAINED FROM 80-97% VINYLIDENE CHLORIDE AND 3-20% OF AT LEAST ONE OTHER POLYMERIZABLE MONO-OLEFINIC OMONOMER COPOLYMERIZABLE WITH VINYLIDENE CHLORIDE.
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) | 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 |