Patent US3801673A successfully refreshed from Google Patents.
US3801673A
Expired / Lapsed
US
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Process for preparing polycarbonate alloys
Assignee: General Electric Co
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Filing: 1972-01-03
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Granted: 1974-04-02
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Expires: 1992-01-03
Abstract
Abstract A PROCESS FOR PREPARING AN ALLOY OF A POLYCARBONATE AND AN OLEFIN POLYMER. THE PROCESS INVOLVES MELT BLENDING TWO POLYMERS HAVING MELT VISCOSITIES WITHIN 50 PERCENT OF EACH POLYMER AT THE TEMPERATURE AND SHEAR RATE EMPLOYED FOR MELT BLENDING.
Inventors
- 👤 Connell W O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:12
CPC Classifications
C; C08; C08L; C08L69/00; Y; Y10; Y10S; Y10S525/00; Y10S525/931
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 |