Patent US2432822A successfully refreshed from Google Patents.
US2432822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for thermal preconditioning catalyst in hydrocarbon conversion
Assignee: Filtrol Corp
•
Filing: 1943-10-02
•
Granted: 1947-12-16
•
Expires: 1963-10-02
Abstract
No abstract record available.
Inventors
- 👤 Robert B Secor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:15
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; Y; Y10; Y10S; Y10S252/00; Y10S252/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1402112A
Cited
US1838621A
Cited
US1984380A
Cited
GB383616A
Cited
US1954534A
Cited
US2054441A
Cited
US2107215A
Cited
US2222400A
Cited
US2180576A
Cited
US2216262A
Cited
US2289329A
Cited
US2325516A
Cited
US2311564A
Cited
US2302209A
Cited
US2341193A
Cited
US2366372A
Cited
US2327175A
Cited
US2384943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |