US3396142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making glass fiber reinforced thermoplastic polymer articles
Assignee: Dow Chemical Co
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Filing: 1963-04-24
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Granted: 1968-08-06
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Expires: 1983-04-24
Abstract
No abstract record available.
Inventors
- 👤 Little Arthur George
- 👤 Allan D Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:36
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A PROCESS FOR MAKING SHAPED ARTICLES FROM A COMPOSITION COMPRISING A MAJOR KPROPORTION BY WEIGHT OF A NORMALLY SOLID THERMOPLASTIC JPOLYMER AND A MINOR AMOUNT OF GLASS FIBERS, THE IMPROVEMENT WHICH CONSISTS IN BLENDING TOGETHER FROM 60 TO 95 PARTS BY WEIGHT OF A NORMALLY SOLID THERMOPLASTIC ORGANIC POLYMER IN THE FORM OF PARTICLES OF SIZES NOT SUBSTANTIALLY GREATER THAN 12 MESH PER INCH AS DETERMINED BY U.S. STANDARD SCREENS AND FROM 40 TO 5 PERCENT BY WEIGHT OF CHOPPED STRAND FIBER GLASS IN LENGTHS BETWEEN 3/16 AND 9/16 INCH, AND THEREAFTER MOLDING SAID MIXTURE OF MATERIALS INTO SHAPED ARTICLES BY INJECTION MOLDING TECHNIQUES.
Claim 2
Dependent Claim
105 words
IN A PROCESS FOR MAKING SHAPED ARTICLES FROM A COMPOSITION COMPRISING A MAJOR KPROPORTION BY WEIGHT OF A NORMALLY SOLID THERMOPLASTIC JPOLYMER AND A MINOR AMOUNT OF GLASS FIBERS, THE IMPROVEMENT WHICH CONSISTS IN BLENDING TOGETHER FROM 60 TO 95 PARTS BY WEIGHT OF A NORMALLY SOLID THERMOPLASTIC ORGANIC POLYMER IN THE FORM OF PARTICLES OF SIZES NOT SUBSTANTIALLY GREATER THAN 12 MESH PER INCH AS DETERMINED BY U.S. STANDARD SCREENS AND FROM 40 TO 5 PERCENT BY WEIGHT OF CHOPPED STRAND FIBER GLASS IN LENGTHS BETWEEN 3/16 AND 9/16 INCH, AND THEREAFTER MOLDING SAID MIXTURE OF MATERIALS INTO SHAPED ARTICLES BY INJECTION MOLDING TECHNIQUES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |