US2739906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange resin compositions and preparation of same
Assignee: EIDP Inc
•
Filing: 1953-06-05
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Granted: 1956-03-27
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Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Berry
- 👤 Jack R Caddell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:37
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/016; B01J39/00; B01J39/08; B01J39/16; B01J39/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PARTICULATE, ION EXCHANGE RESIN COATED, INERT SOLID HAVING A SPECIFIC GRAVITY OF AT LEAST 1.5 AND BEING COMPOSED OF PARTICLES OF AN INERT, NON-POROUS, WATER-INSOLUBLE, INORGANIC SOLID HAVING DIMENSIONS OF THE ORDER OF 0.01 TO 0.5 CM., A WEIGHT OF AT LEAST 75 LB./CU. FT. AND A SPECIFIC SURFACE OF NOT OVER 250 CM.2/G., SAID PARTICLES BEING AT LEAST PARTIALLY COATED WITH AN ION EXCHANGE RESIN.
Claim 2
Dependent Claim
67 words
A PARTICULATE, ION EXCHANGE RESIN COATED, INERT SOLID HAVING A SPECIFIC GRAVITY OF AT LEAST 1.5 AND BEING COMPOSED OF PARTICLES OF AN INERT, NON-POROUS, WATER-INSOLUBLE, INORGANIC SOLID HAVING DIMENSIONS OF THE ORDER OF 0.01 TO 0.5 CM., A WEIGHT OF AT LEAST 75 LB./CU. FT. AND A SPECIFIC SURFACE OF NOT OVER 250 CM.2/G., SAID PARTICLES BEING AT LEAST PARTIALLY COATED WITH AN ION EXCHANGE RESIN.
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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |