US2786780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating process for polyethylene and composite articles obtained thereby
Assignee: Dow Chemical Co
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Filing: 1956-05-25
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Granted: 1957-03-26
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Expires: 1976-05-25
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm E Walles
- 👤 Harold G Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:48
CPC Classifications
B; B32; B32B; B32B27/00; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J7/048; C08J7/12; C08J7/14; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2427/00; Y; Y10; Y10S; Y10S8/00; Y10S8/09; Y10S8/10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
METHOD FOR COATING A POLYETHYLENE ARTICLE WITH A RESINOUS TRIPOLYMER OF VINYLIDENE CHLORIDE, ACRYLONITRILE AND A FUNCTIONALLY ACIDIC ETHENOID MONOMER WHICH COMPRISES SULFONATING THE SURFACE OF THE POLYETHYLENE, TREATING THE SULFONATED SURFACE WITH A POLYBASIC COMPOUND CONTAINING AT LEAST TWO AMINE GROUPS TO PROVIDE SAID SUR-
Claim 2
Dependent Claim
46 words
METHOD FOR COATING A POLYETHYLENE ARTICLE WITH A RESINOUS TRIPOLYMER OF VINYLIDENE CHLORIDE, ACRYLONITRILE AND A FUNCTIONALLY ACIDIC ETHENOID MONOMER WHICH COMPRISES SULFONATING THE SURFACE OF THE POLYETHYLENE, TREATING THE SULFONATED SURFACE WITH A POLYBASIC COMPOUND CONTAINING AT LEAST TWO AMINE GROUPS TO PROVIDE SAID SUR-
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) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |