Patent US3629366A successfully refreshed from Google Patents.
US3629366A
Expired / Lapsed
US
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Shaped article from a mixture of polyethylene terephthalates of different reduced viscosities
Assignee: Hoechst AG
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Filing: 1968-10-11
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Granted: 1971-12-21
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Expires: 1988-10-11
Abstract
Abstract PROCESS FOR THE MANUFACTURE OF A POLYETHYLENE TEREPHTHALATE MOULDING COMPOSITION OF AVERAGE REDUCED SPECIFIC VISCOSITY SUITABLE FOR INJECTION MOULDING CONSISTING OF AT LEAST TWO POLYETHYLENE TEREPHTHALATES HAVING VERY DIFFERENT VISCOSITIES.
Inventors
- 👤 Ludwig Brinkmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:02
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |