US3471586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of active hydrocarbon conversion catalysts
Assignee: Universal Oil Products Co
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Filing: 1965-08-27
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Granted: 1969-10-07
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Expires: 1985-08-27
Abstract
No abstract record available.
Inventors
- 👤 George R Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:42
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/12; B01J37/14; C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |