US3801530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyalkylene resin composition and process for making same
Assignee: Celanese Corp
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Filing: 1973-04-12
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Granted: 1974-04-02
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Expires: 1993-04-12
Abstract
Abstract THE PRESENT INVENTION RELATES TO THE STABILIZED COMPOSITIONS OF POLYALKYLENE TEREPHTHALATE RESINS. MORE PARTICULARLY, THE PRESENT INVENTION RELATES TO THE RETENTION OF COLOR AND PHYSICAL PROPERTIES EVEN AFTER HIGH TEMPERATURE OVEN-AGING OF BOTH REINFORCED AND UNREINFORCED POLYPROPYLENE TEREPHTHALATE AND POLYBUTYLENE TEREPHTHALATE MOLDING RESINS BY THE ADDITION OF A SUBSTITUTED OR UNSUBSTITUTED ALKYLENE BIS STEARAMIDE.
Inventors
- 👤 W Freed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:07
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |