US3577378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber reinforced polycarbonates
Assignee: Bayer AG
•
Filing: 1968-09-09
•
Granted: 1971-05-04
•
Expires: 1988-09-09
Abstract
Abstract THE INVENTION MEETS WITH A PROCESS FOR THE PRODUCTION OF GLASS FIBER REINFORCED POLYCARBONATES BY INTRODUCING MILLED, FILAMENTIZED, WATER-SIZED GLASS FIBERS INTO A SOLUTION OR A MELT OF POLYCARBONATE RESIN, REMOVING THE SOLVENT IF NECESSARY AND EXTRUDING THE GLASS FIBER CONTAINING MELT THROUGH A NOZZLE.
Inventors
- 👤 Hugo Streib
- 👤 Wilhelm Hechelhammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:52
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29B9/12; B29B9/14; C08L; C08L69/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |