US2442772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and use of zirconia gels in the conversion of hydrocarbons
Assignee: ExxonMobil Oil Corp
•
Filing: 1944-03-16
•
Granted: 1948-06-08
•
Expires: 1964-03-16
Abstract
No abstract record available.
Inventors
- 👤 Milton M Marislc
- 👤 Edward M Griest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:28
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/066; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |