US2466675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sulfonated resin ion exchange agents in stable granular form
Assignee: Dow Chemical Co
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Filing: 1945-04-02
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Granted: 1949-04-12
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Expires: 1965-04-02
Abstract
No abstract record available.
Inventors
- 👤 William C Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:11
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/19; B01J47/00; B01J47/016; C08F; C08F8/00; C08F8/34; C08F8/36; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 0
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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) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |