Patent US3134684A successfully refreshed from Google Patents.
US3134684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adhering vinylidene chloride polymer to polyethylene
Assignee: WR Grace and Co
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Filing: 1963-01-10
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Granted: 1964-05-26
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Expires: 1983-01-10
Abstract
No abstract record available.
Inventors
- 👤 Lillian W Northrop
- 👤 Donald S Scheufele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD OF IMPROVING THE ADHESION OF A VINYLIDENE CHLORIDE POLYMER TO POLYETHYLENE COMPRISING SUBJECTING POLYETHYLENE WHICH HAS BEEN COATED WITH A SOLUTION OF VINYLIDENE CHLORIDE POLYMER IN A SOLVENT AND THE SOLVENT REMOVED TO AN EXTENT SUFFICIENT TO FORM A COATING OF THE VINYLIDENE CHLORIDE POLYMER ON THE POLYETHYLENE TO ULTRA-
Claim 2
Independent Claim
52 words
A METHOD OF IMPROVING THE ADHESION OF A VINYLIDENE CHLORIDE POLYMER TO POLYETHYLENE COMPRISING SUBJECTING POLYETHYLENE WHICH HAS BEEN COATED WITH A SOLUTION OF VINYLIDENE CHLORIDE POLYMER IN A SOLVENT AND THE SOLVENT REMOVED TO AN EXTENT SUFFICIENT TO FORM A COATING OF THE VINYLIDENE CHLORIDE POLYMER ON THE POLYETHYLENE TO ULTRA-
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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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |