US3562200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene terephthalate containing ethylene
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-08-22
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Granted: 1971-02-09
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Expires: 1988-08-22
Abstract
Abstract THICK WALLED-SHAPED ARTICLES OF CRYSTALLISED POLY(ETHYENE TEREPHTHALATE) CONTAINING FINELY DISPERSED DISCRETE PARTICLES OF A RUBBERY COPOLYMER OF ETHYLENE AND AN ETHYLENICALLY UNSATURATED ESTER, E.G., AN ALKYL ACRYALTE, HYDROXYALKYL ACRYALTE OR VINYL ALKANOATE; COMPOSITIONS SUITABLE FOR CONVERSION TO THESE SHAPED ARTICLES AND METHODS OF PRODUCING THE SHAPED ARTICLES FROM THE COMPOSITIONS.
Inventors
- 👤 Copolymers Michael Edwar Jones
- 👤 Eric Nield
- 👤 Charles Richard Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |