US3479322A
Expired / Lapsed
US
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Cationic ion exchange resin catalysts and process for their production and use
Assignee: Marathon Oil Co
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Filing: 1966-02-14
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Granted: 1969-11-18
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Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 Alan H Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:32
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; C; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C07C37/16; C07C37/18; C08; C08G; C08G10/00; C08G10/02; C08G16/00; C08G16/02; C08G16/0293; B01J2231/00; B01J2231/40; B01J2231/42; B01J2231/4205
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |