US2628193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion-exchange resins
Assignee: Beazer East Inc
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Filing: 1949-09-24
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Granted: 1953-02-10
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Expires: 1969-09-24
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:30
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/20; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A WATER-INSOLUBLE RESIN CONTAINING A PLURALITY OF SULFONIC ACID GROUPS, SAID GROUPS BEING ATTACHED TO A CROSS-LINKED POLYMERZATED PREPARED BY THE POLYMERIZATION OF A POLYMERIZABLE MIXTURE COMPRISING (1) FROM ABOUT 75% TO ABOUT 98% OF A POLYMERIZABLE AROMATIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF POLYMERIZABLE MONOVINYL-AROMATIC AND MONO-(ALPHA-ALKYL-VINYL)AROMATIC HYDROCARBON AND NUCLEARLY-HALOGENSUBSTITUTED HYDROCARBON COMPOUNDS AND (2) FROM ABOUT 2% TO ABOUT 25% OF A COPOLYMERIZABLE ALKENYL HALIDE, SAID CROSS-LINKING BEING EFFECTED IN THE PRESENCE OF A STRONG IONIC CATALYST.
Claim 2
Dependent Claim
79 words
A WATER-INSOLUBLE RESIN CONTAINING A PLURALITY OF SULFONIC ACID GROUPS, SAID GROUPS BEING ATTACHED TO A CROSS-LINKED POLYMERZATED PREPARED BY THE POLYMERIZATION OF A POLYMERIZABLE MIXTURE COMPRISING (1) FROM ABOUT 75% TO ABOUT 98% OF A POLYMERIZABLE AROMATIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF POLYMERIZABLE MONOVINYL-AROMATIC AND MONO-(ALPHA-ALKYL-VINYL)AROMATIC HYDROCARBON AND NUCLEARLY-HALOGENSUBSTITUTED HYDROCARBON COMPOUNDS AND (2) FROM ABOUT 2% TO ABOUT 25% OF A COPOLYMERIZABLE ALKENYL HALIDE, SAID CROSS-LINKING BEING EFFECTED IN THE PRESENCE OF A STRONG IONIC CATALYST.
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) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |