US2873175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for catalytic conversion of hydrocarbon fluids
Assignee: MW Kellogg Co
•
Filing: 1952-09-10
•
Granted: 1959-02-10
•
Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Robert M Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:48
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2304128A
Cited
US2496356A
Cited
US2440620A
Cited
US2425807A
Cited
US2606863A
Cited
US2587554A
Cited
US2502954A
Cited
US2519150A
Cited
US2449027A
Cited
US2471034A
Cited
US2471064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |