US3385797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst manufacture
Assignee: Universal Oil Products Co
•
Filing: 1967-03-06
•
Granted: 1968-05-28
•
Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
- 👤 William G Nixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:58
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/12; B01J21/02; B01J21/04; B01J21/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2344890A
Cited
US2397639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |