US3732345A
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Method for the incorporation of filamentary material in a resinous matrix
Assignee: Dow Chemical Co
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Filing: 1970-04-16
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Granted: 1973-05-08
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Expires: 1990-04-16
Abstract
Abstract GLASS REINFORCED THERMOPLASTICS ARE FORMED BY DIRECTLY ADDING CHOPPED FILAMENTS AND PARTICULATE THERMOPLASTIC RESIN TO HEAT FABRICATING APPARATUS SUCH AS AN EXTRUDER OR PRE-PLASTICIZING INJECTION MOLDING MACHINE UNDER NONSTRATIFYING CONDITIONS TO PROVIDE A GLASS REINFORCED MOLDED ARTICLE.
Inventors
- 👤 J Amos
- 👤 A Bird
- 👤 R Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:10
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/0005; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/60; B29B7/603; B29B7/80; B29B7/88; B29B7/90; B29B7/905; B29C45/17; B29C45/18; B29C45/1816; B29C48/00; B29C48/25; B29C48/285; B29C48/288; B29C48/2886; B29C48/29; B29C45/46; B29C2045/466; B29C48/03; B29C48/04; B29K; B29K2105/00; B29K2105/06; B29K2105/08; Y; Y10; Y10S; Y10S264/00; Y10S264/53
Claims Analysis
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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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |