US3586737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact-resistant rubber-modified olefinic nitrile-acrylic ester polymers
Assignee: Standard Oil Co
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Filing: 1969-02-13
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Granted: 1971-06-22
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Expires: 1989-02-13
Abstract
Abstract IMPACT-RESITANT POLYMERS HAVING LOW PERMEABILITY TO GASES AND VAPORS ARE PREPARED BY POLYMERIZING AN OLEFINIC NITRILE, SUCH AS ACRYLONITRILE, OPTIONALLY WITH AN OLEFINIC ESTER, SUCH AS METHYL ACRYLATE, IN AN AQUEOUS MEDIUM IN THE PRESENCE OF A RUBBERY POLYBUTADIENE OR RUBBERY COPOLYMER OF BUTADIENE AND STYRENE.
Inventors
- 👤 June T Duke
- 👤 Dorothy C Prem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:31
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; Y; Y10; Y10S; Y10S525/00; Y10S525/942
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |