US2961365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamination of polyethylene terephthalate structures
Assignee: EIDP Inc
•
Filing: 1954-10-13
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Granted: 1960-11-22
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Expires: 1974-10-13
Abstract
No abstract record available.
Inventors
- 👤 Sroog Cyrus Efrem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:50
CPC Classifications
B; B32; B32B; B32B27/00; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10S; Y10S206/00; Y10S206/813; Y10S206/819; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/31678; Y10T428/31681; Y10T428/31786; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/3472; Y10T442/3602; Y10T442/3667; Y10T442/3854; Y10T442/3862
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A METHOD OF PREPARING A LAMINATION COMPRISING ADHERING THE SURFACE OF A LAYER OF A POLYMERIC LINEAR TEREPHTHALIC ESTER STRUCTURE TO AN ADHESIVE LAYER, SAID ADHESIVE LAYER CONSISTING OF A POLYESTER OF A POLYMETHYLENE GYLCOL HAVING FROM 2-10 CARBON ATOMS PER MOLECULE WITH A DICARBOXYLIC ACID FROM THE GROUP CONSISTING OF ISOPHTHALIC ACID, HEXAHYDRO-TEREPHTHALIC ACID, A MIXTURE OF TEREPHTHALIC ACID AND ISOPHTHALIC ACID, AND MIXTURE OF TEREPHTHALIC ACID AND HEXAHYDROTEREPHTHALIC ACID, A MIXTURE OF ISOPHTHALIC ACID AND HEXAHYDRO-TEREPHTHALIC ACID, AND A MIXTURE OF ISOPHTHALIC ACID, HEXAHYDROTEREPHTHALIC ACID AND TEREPHTHALIC ACID, AND THEREAFTER ADHERING SAID ADHESIVE TO A SECOND LAYER.
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |