US3784595A
Expired / Lapsed
US
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Polycarbonate molding compositions having improved release properties containing an ester of a trihydric alcohol and a c-10 to c-22 saturated aliphatic carboxylic acid
Assignee: Bayer AG
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Filing: 1971-12-23
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Granted: 1974-01-08
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Expires: 1991-12-23
Abstract
Abstract POLYCARBONATE MOLDING COMPOSITIONS ARE PROVIDED WHICH CONTAIN FROM ABOUT 0.1 TO ABOUT 2% BY WEIGHT BASED ON THE WEIGHT OF THE POLYCARBONATE OF ONE OR MORE ESTERS OF TRIHYDRIC ALCOHOLS AND SATURATED ALIPHATIC CARBOXYLIC ACIDS CONTAINING FROM TEN TO TWENTY-TWO CARBON ATOMS.
Inventors
- 👤 H Schirmer
- 👤 G Peilstoecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:23
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; C08J2369/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |