US3565876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oriented methacrylonitrile polymer articles
Assignee: Standard Oil Co
•
Filing: 1968-02-28
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Granted: 1971-02-23
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Expires: 1988-02-28
Abstract
Abstract MULTIAXIALLY ORIENTED ARTICLES OR FILMS WHICH HAVE SUPERIOR PHYSICAL PROPERTIES AND ARE HEAT SHRINKABLE AND HEAT SEALABLE CAN BE PREPARED BY EXTRUSION FROM POLYMERS OR COPOLYMERS OF METHACRYLONITRILE WITH ACRYLONITRILE IN THE RATIOS OF 80 TO 100 PARTS BY WEIGHT OF METHACRYLONITRILE TO 20 TO 0 PARTS BY WEIGHT OF ACRYLONITRILE AND OPTIONALLY UP TO ABOUT 5 PARTS BY WEIGHT OF THE METHACRYLONITRILE MAY BE REPLACED BY ANOTHER VINYL MONOMER SUCH AS METHYL METHACRYLATE.
Inventors
- 👤 Lawrence E Ball
- 👤 Harry R Musser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:21
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/50; Y; Y10; Y10S; Y10S428/00; Y10S428/91
Claims Analysis
Total Claims: 0
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |