Patent US3310505A successfully refreshed from Google Patents.
US3310505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of thermoplastic materials
Assignee: Phillips Petroleum Co
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Filing: 1963-03-11
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Granted: 1967-03-21
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:30
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/26; B; B29; B29B; B29B11/00; B29B9/00; B29B9/02; B29B9/06; B29C; B29C67/00; B29C67/20; B29C67/202; C08J2201/00; C08J2201/04; C08J2201/046; C08J2201/0462; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10S; Y10S264/00; Y10S264/08; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR PRODUCING THERMOPLASTIC MATERIAL COMPRISING: (A) FORMING A MIXTURE IN A BLENDING ZONE CONSISTING OF POWDERED POLYETHYLENE AND POWDERED POLYMETHYLMETHACRYLATE; (B) HEATING SAID MIXTURE TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 250-350*F.; (C) EXTRUDING SAID HEATED MIXTURE TO FORM A PRESSED SHEET, SAID PRESSED SHEET HAVING A THICKNESS OF 0.3 TO 0.9 MM., IN WHICH THE POLYETHYLENE IS ORIENTED IN THE DIRECTION OF FLOW; (D) CUTTING SAID PRESSED SHEET INTO SEGMENTS; (E) REMOLDING SAID SEGMENTS INTO A SLICED MOLDED SHEET SO AS TO PROVIDE A PLASTIC SHEET IN WHICH THE POLYETHYLENE IS NONORIENTED; (F) PLACING SAID SHEET IN A SOLVENT SELECTIVE TO SAID POLYMETHYLMETHACRYLATE TO LEACH OUT SAID POLYMETHYLMETHACRYLATE.
Claim 2
Dependent Claim
112 words
A PROCESS FOR PRODUCING THERMOPLASTIC MATERIAL COMPRISING: (A) FORMING A MIXTURE IN A BLENDING ZONE CONSISTING OF POWDERED POLYETHYLENE AND POWDERED POLYMETHYLMETHACRYLATE; (B) HEATING SAID MIXTURE TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 250-350*F.; (C) EXTRUDING SAID HEATED MIXTURE TO FORM A PRESSED SHEET, SAID PRESSED SHEET HAVING A THICKNESS OF 0.3 TO 0.9 MM., IN WHICH THE POLYETHYLENE IS ORIENTED IN THE DIRECTION OF FLOW; (D) CUTTING SAID PRESSED SHEET INTO SEGMENTS; (E) REMOLDING SAID SEGMENTS INTO A SLICED MOLDED SHEET SO AS TO PROVIDE A PLASTIC SHEET IN WHICH THE POLYETHYLENE IS NONORIENTED; (F) PLACING SAID SHEET IN A SOLVENT SELECTIVE TO SAID POLYMETHYLMETHACRYLATE TO LEACH OUT SAID POLYMETHYLMETHACRYLATE.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |