US3686069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite articles of polyethylene terephthalate and polyamide and methods for making same
Assignee: IM K PARK
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Filing: 1970-11-05
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Granted: 1972-08-22
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Expires: 1990-11-05
Abstract
Abstract COMPOSITE ARTICLES OF POLYETHYLENE TEREPHTHALATE AND POLYAMIDE, SUCH AS MULTILAYERED FILMS, TUBES, AND THE LIKE, ARE PROVIDED BY INTERPOSING A POWDERED MIXTURE OF THE TWO POLYMERS BETWEEN THE PARTS TO BE JOINED, AND FUSING THE RESULTING COMPOSITE BODY.
Inventors
- 👤 Ernel R Winkler
- 👤 Im K Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/34; B32B27/36; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J5/128; C08L; C08L67/00; C08L67/02; C08L77/00; C08L77/06; B32B2367/00; B32B2377/00; B32B2597/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31786
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |