US3457186A
Expired / Lapsed
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Homogeneous iron coordination catalysts
Assignee: Columbian Carbon Co
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Filing: 1964-09-30
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Granted: 1969-07-22
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Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 William E Marsico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:20
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/269; B; B01; B01J; B01J21/00; B01J21/02; B01J27/00; B01J27/24; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/16; B01J31/18; B01J31/1845; B01J31/185; C08F; C08F10/00; C08F36/00; C08F36/02; C08F36/04; C08F4/00; C08F4/06; C08F4/12; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/842; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/2234; B01J31/26; B01J31/28; B01J31/30
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |