Patent US2687383A successfully refreshed from Google Patents.
US2687383A
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Ion-exchange resins from dihydroxy benzenes or phenol sulfonic acid and polyfunctional unsaturated compounds
Assignee: Beazer East Inc
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Filing: 1949-09-24
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Granted: 1954-08-24
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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
2026-10-30 11:25
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
AN INFUSIBLE, INSOLUBLE RESIN COMPRISING THE REACTION PRODUCT OBTAINED BY FORMING A MIXTURE CONSISTING SOLELY OF (1) A PHENOLIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
23 words
AN INFUSIBLE, INSOLUBLE RESIN COMPRISING THE REACTION PRODUCT OBTAINED BY FORMING A MIXTURE CONSISTING SOLELY OF (1) A PHENOLIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
CH154180A
Cited
DE609477C
Cited
US2246762A
Cited
US2224837A
Cited
US2319359A
Cited
FR904101A
Cited
US2553470A
Cited
US2459835A
Cited
US2527300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |