US2925356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic films coated with vinylidene chloride copolymer and an antistatic agent
Assignee: EIDP Inc
•
Filing: 1956-04-24
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Granted: 1960-02-16
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Expires: 1976-04-24
Abstract
No abstract record available.
Inventors
- 👤 Sapper David Ivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:30
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/044; C08J7/052; C08J2427/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD FOR REDUCING THE STATIC PROPENSITY OF A COATED SYNTHETIC THERMOPLASTIC FILM HAVING A CONTINUOUS TOP-COATING COMPRISING A COPOLYMER OF VINYLIDENE CHLORIDE, IN MAJOR PROPORTION, AND AT LEAST ONE OTHER MONOOLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, WHICH COMPRISES COATING THE COATED SURFACE OF THE COATED FILM WITH AN AQUEOUS SOLUTION CONTAINING FROM 0.020-1.0% BY WEIGHT OF ZINC CHLORIDE, BASED ON THE TOTAL WEIGHT OF WATER IN THE SOLUTION, FROM 0.027 TO 1.4% OF SODIUM CHLORIDE AND FROM 0.025 TO 1.0% OF AN ALKALI METAL ALKYL SULFATE CONTAINING AT LEAST 8 CARBON ATOMS IN THE ALKYL GROUP, AND THEREAFTER DRYING SAID COATED FILM.
Claim 2
Independent Claim
101 words
A METHOD FOR REDUCING THE STATIC PROPENSITY OF A COATED SYNTHETIC THERMOPLASTIC FILM HAVING A CONTINUOUS TOP-COATING COMPRISING A COPOLYMER OF VINYLIDENE CHLORIDE, IN MAJOR PROPORTION, AND AT LEAST ONE OTHER MONOOLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, WHICH COMPRISES COATING THE COATED SURFACE OF THE COATED FILM WITH AN AQUEOUS SOLUTION CONTAINING FROM 0.020-1.0% BY WEIGHT OF ZINC CHLORIDE, BASED ON THE TOTAL WEIGHT OF WATER IN THE SOLUTION, FROM 0.027 TO 1.4% OF SODIUM CHLORIDE AND FROM 0.025 TO 1.0% OF AN ALKALI METAL ALKYL SULFATE CONTAINING AT LEAST 8 CARBON ATOMS IN THE ALKYL GROUP, AND THEREAFTER DRYING SAID COATED FILM.
References Cited (Backward Citations)
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US2748027A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |