US3200176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for molding thermoplastic resin articles free of surface defects
Assignee: Monsanto Chemicals Ltd
•
Filing: 1964-02-27
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Granted: 1965-08-10
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Baxter Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:36
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/42; B29C45/00; B29C45/0001; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S264/13; Y10S264/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR PREPARING A MOLDED THERMOPLASTIC SYNTHETIC RESIN ARTICLE WHICH IS ESSENTIALLY FREE OF SURFACE VOIDS AND DEFORMITIES WHICH PROCESS COMPRISES INTIMATELY ADMIXING A THERMOPLASTIC SYNTHETIC RESIN WITH 0.005-1.0% BY WEIGHT OF A BLOWING AGENT BASED ON THE WEIGHT OF THE THERMOPLASTIC SYNTHETIC RESIN, HEATING THE ADMIXTURE TO A TEMPERATURE SUFFICIENT TO MELT THE RESIN AND UNDER A PRESSURE SUFFICIENT TO CAUSE THE RESIN TO FLOW AND INJECTING THE RESIN INTO A MOLD CAVITY.
Claim 2
Dependent Claim
75 words
A PROCESS FOR PREPARING A MOLDED THERMOPLASTIC SYNTHETIC RESIN ARTICLE WHICH IS ESSENTIALLY FREE OF SURFACE VOIDS AND DEFORMITIES WHICH PROCESS COMPRISES INTIMATELY ADMIXING A THERMOPLASTIC SYNTHETIC RESIN WITH 0.005-1.0% BY WEIGHT OF A BLOWING AGENT BASED ON THE WEIGHT OF THE THERMOPLASTIC SYNTHETIC RESIN, HEATING THE ADMIXTURE TO A TEMPERATURE SUFFICIENT TO MELT THE RESIN AND UNDER A PRESSURE SUFFICIENT TO CAUSE THE RESIN TO FLOW AND INJECTING THE RESIN INTO A MOLD CAVITY.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |