US3700610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinylpyridines with 1,3,5-triacryloylhexahydro-1,3,5-triazine
Assignee: Yeda Research and Development Co Ltd
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Filing: 1970-08-21
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Granted: 1972-10-24
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Expires: 1990-08-21
Abstract
Abstract COPOLYMERS OF VINYLPYRIDINES, WHICH MAY BE ALKYL SUBSTITUTED, WITH 1,3,5-TRIACRYLOYLHEXAHYDRO-1,3,5-TRIAZINE. THESE COPOLYMERS MAY BE QUATERNIZED AND UTILIZED AS ION EXCHANGERS. ALTERNATIVELY, THEY ARE CAPABLE OF COMPLEX FORMATION WITH MOLECULAR HALOGEN AND MAY THUS BE UTILIZED FOR THE REMOVAL OF ELEMENTARY HALOGEN FROM OR ITS INTRODUCTION INTO A DESIRED MEDIUM.
Inventors
- 👤 Jacobo Zelik Zabicky-Zissman
- 👤 Ephraim Katchalski
- 👤 Ida Oren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:01
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/13; B; B01; B01J; B01J45/00; C01B7/09; C08; C08F; C08F20/00; C08F20/02; C08F20/08
Claims Analysis
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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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |