US3770697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable polycarbonate compositions
Assignee: General Electric Co
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Filing: 1971-04-30
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Granted: 1973-11-06
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Expires: 1991-04-30
Abstract
Abstract POLYCARBONATE COMPOSITIONS ARE PROVIDED COMPRISING POLYCARBONATES SUBSTITUTED WITH AT LEAST ONE CHEMICALLYCOMBINED ALIPHATICALLY UNSATURATED IMIDO RADICAL, SUCH AS A MALEIMIDO RADICAL. THE IMIDO-SUBSTITUTED POLYCARBONATES CAN BE BLENDED WITH VARIOUS ALIPHATICALLY UNSATURATED MONOMERS, SUCH AS STYRENE, CHLOROSTYRENE, N-PHENYL MALEIMIDE, DIALLYLPHTHALATE, TRIALLYLCYANURATE, ETC. AND VARIOUS ORGANIC POLYMERS, SUCH AS POLYSTYRENE, POLYCARBONATE, POLYSULFONE, POLYPHENYLENEOXIDE, POLYURETHANE, ETC. THE POLYCARBONATE, COMPOSITIONS OF THE PRESENT INVENTION CAN BE EMPLOYED AS MOLDING COMPOUNDS, FOR MAKING FILMS, LAMINATES, ETC.
Inventors
- 👤 F Holub
- 👤 M Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/04; C08G64/045; C08L; C08L69/00; Y; Y10; Y10S; Y10S525/00; Y10S525/925
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |