US2809169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for the manufacture of catalysts
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1951-10-06
•
Granted: 1957-10-08
•
Expires: 1971-10-06
Abstract
No abstract record available.
Inventors
- 👤 Robert S Whiteley
- 👤 Jr Charles N Kimberlin
- 👤 Jr Robert E Schexnailder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:35
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J13/00; B01J21/12; 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)
US1016864A
Cited
US2348647A
Cited
US2292708A
Cited
US2437533A
Cited
US2435158A
Cited
US2467470A
Cited
US2457970A
Cited
US2446784A
Cited
US2471000A
Cited
US2579251A
Cited
US2595339A
Cited
US2582254A
Cited
US2713037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |