US3592876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polyester moulding compositions
Assignee: Hoechst AG
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Filing: 1969-03-03
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Granted: 1971-07-13
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Expires: 1989-03-03
Abstract
Abstract METHOD FOR MAKING SHAPED ARTICLES BY INJECTION MOULDING POLYESTER COMPOSITIONS COMPRISING AROMATIC DICARBOXYLIC ACIDS, SATURATED ALIPHATIC OR CYCLOALIPHATIC DIOLS AND ALCOHOLS HAVING MORE THAN TWO PRIMARY HYDROZYL GROUPS. THE SHAPED ARTICLES DO NOT SHOW FLASH FORMATION.
Inventors
- 👤 Ludwig Brinkmann
- 👤 Walter Herwig
- 👤 Klaus-Dieter Asmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:31
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08L; C08L67/00; C08L23/00; C08L23/02; C08L23/04; C08L23/08
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |