US3022253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous insoluble nitrogen-containing polymers derived from vinylbenzyl chloride and vinylpyridines
Assignee: Dow Chemical Co
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Filing: 1958-03-24
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Granted: 1962-02-20
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Expires: 1978-03-24
Abstract
No abstract record available.
Inventors
- 👤 Elmer L Mcmaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:09
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08F20/00; C08F20/02; C08F20/08; C08F212/00; C08F212/02; C08F212/04; C08F212/14; C08F212/16; C08F212/18; C08F8/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A POLYMERIC COMPOSITION WHICH COMPRISES AN INSOLUBLE CROSS-LINKED POLYMERIC PRODUCT, CONTAINING PYRIDINIUM GROUPS IN THE POLYMER MOLECULES, SELECTED FROM THE GROUP CONSISTING OF (A) POLYMERS RESULTING FROM THE SIMULTANEOUS COPOLYMERIZATION AND REACITON OF FROM 50 TO 95 MOLE PERCENT OF VINYLBENXYL CHLORIDE AND CORRESPONDINGLY FROM 50 TO 5 MOLE PERCENT OF A VINYL-SUBSTITUTED HETEROCYCLIC AMINE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
59 words
A POLYMERIC COMPOSITION WHICH COMPRISES AN INSOLUBLE CROSS-LINKED POLYMERIC PRODUCT, CONTAINING PYRIDINIUM GROUPS IN THE POLYMER MOLECULES, SELECTED FROM THE GROUP CONSISTING OF (A) POLYMERS RESULTING FROM THE SIMULTANEOUS COPOLYMERIZATION AND REACITON OF FROM 50 TO 95 MOLE PERCENT OF VINYLBENXYL CHLORIDE AND CORRESPONDINGLY FROM 50 TO 5 MOLE PERCENT OF A VINYL-SUBSTITUTED HETEROCYCLIC AMINE HAVING THE GENERAL FORMULA:
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |