US3021229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leader film
Assignee: EIDP Inc
•
Filing: 1960-05-26
•
Granted: 1962-02-13
•
Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 Morgan James Gail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:18
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/043; Y; Y10; Y10S; Y10S430/00; Y10S430/135; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A LEADER FILM COMPRISING A BASE FILM OF HIGHLY FLEXIBLE, BIAXIALLY-ORIENTED, MACROMOLECULAR POLYESTER FILM CORRESPONDING TO THE POLYESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A DIHYDRIC ALCOHOL HAVING ON ONE SURFACE THEREOF, IN ORDER, (1) A THIN LAYER OF AN ADHERENT, FILM-FORMING, ESSENTIALLY HYDROPHOBIC COPOLYMER OF 35 TO 96% VINYLIDENE CHLORIDE AND FROM 4 TO 65% OF AT LEAST ONE OTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH; (2) A LAYER OF FROM 0.1 TO 0.2 MIL IN THICKNESS OF A VINYLIDENE CHLORIDE COPOLYMER COATED FROM AN AQUEOUS DISPERSION COMPRISING SAID COPOLYMER AND A BLACK PIGMENT, AND (3) A LAYER OF FROM 0.2 TO 0.3 MIL IN THICKNESS OF A VINYLIDENE CHLORIDE COPOLYMER COATED FROM AN AQUEOUS DISPERSION COMPRISING SAID COPOLYMER AND A WHITE PIGMENT; SAID VINYLIDENE CHLORIDE COPOLYMER OF LAYERS (2) AND (3) BEING SELECTED FROM THE GROUP CONSISTING OF (A) A COPOLYMER OBTAINED FROM 35 TO 96% VINYLIDENE CHLORIDE AND 4 TO 65% ACRYLONITRILE, AND (B) A TERPOLYMER OBTAINED FROM 35 TO 96% VINYLIDENE CHLORIDE, 3.5 TO 64.5% METHYL ACRYLATE AND 0.5 TO 2K% ITACONIC ACID.
Claim 2
Dependent Claim
176 words
A LEADER FILM COMPRISING A BASE FILM OF HIGHLY FLEXIBLE, BIAXIALLY-ORIENTED, MACROMOLECULAR POLYESTER FILM CORRESPONDING TO THE POLYESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A DIHYDRIC ALCOHOL HAVING ON ONE SURFACE THEREOF, IN ORDER, (1) A THIN LAYER OF AN ADHERENT, FILM-FORMING, ESSENTIALLY HYDROPHOBIC COPOLYMER OF 35 TO 96% VINYLIDENE CHLORIDE AND FROM 4 TO 65% OF AT LEAST ONE OTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH; (2) A LAYER OF FROM 0.1 TO 0.2 MIL IN THICKNESS OF A VINYLIDENE CHLORIDE COPOLYMER COATED FROM AN AQUEOUS DISPERSION COMPRISING SAID COPOLYMER AND A BLACK PIGMENT, AND (3) A LAYER OF FROM 0.2 TO 0.3 MIL IN THICKNESS OF A VINYLIDENE CHLORIDE COPOLYMER COATED FROM AN AQUEOUS DISPERSION COMPRISING SAID COPOLYMER AND A WHITE PIGMENT; SAID VINYLIDENE CHLORIDE COPOLYMER OF LAYERS (2) AND (3) BEING SELECTED FROM THE GROUP CONSISTING OF (A) A COPOLYMER OBTAINED FROM 35 TO 96% VINYLIDENE CHLORIDE AND 4 TO 65% ACRYLONITRILE, AND (B) A TERPOLYMER OBTAINED FROM 35 TO 96% VINYLIDENE CHLORIDE, 3.5 TO 64.5% METHYL ACRYLATE AND 0.5 TO 2K% ITACONIC ACID.
References Cited (Backward Citations)
US2779684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |