US3637898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polyester moulding compositions containing phosphorus compounds
Assignee: Hoechst AG
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Filing: 1970-06-24
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Granted: 1972-01-25
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Expires: 1990-06-24
Abstract
Abstract THERMOPLASTIC COMPOSITIONS HAVING EXCELLENT INJECTION MOULDING PROPERTIES ARE OBTAINED FROM LINEAR SATURATED POLYESTERS AND ALKALI METAL SALTS OF ORGANIC PHOSPHONIC ACIDS, THE MONOESTERS THEREOF, OF ORGANIC PHOSPHONOUS ACIDS OR OF ORGANIC PHOSPHINIC ACIDS, THE ORGANIC RADICALS BEING SATURATED OR UNSATURATED ALKYL, CYCLOALKYL, ARYL, OR ARALYKYL GROUPS HAVING UP TO 15 CARBON ATOMS.
Inventors
- 👤 Walter Herwig
- 👤 Rudolf Uebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |