US3259592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonated polyphenylene ether cation exchange resin
Assignee: General Electric Co
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Filing: 1961-11-29
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Granted: 1966-07-05
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel W Fox
- 👤 Shenian Popkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:35
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; Y; Y10; Y10S; Y10S525/00; Y10S525/905; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A CATION EXCHANGE RESIN HAVING A REPEATING STRUCTURAL UNIT OF THE FORMULA:
Claim 2
Dependent Claim
12 words
A CATION EXCHANGE RESIN HAVING A REPEATING STRUCTURAL UNIT OF THE 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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |