US2417348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of lining catalyst chambers
Assignee: Phillips Petroleum Co
•
Filing: 1943-03-29
•
Granted: 1947-03-11
•
Expires: 1963-03-29
Abstract
No abstract record available.
Inventors
- 👤 Charles E Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:52
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/02; B01J19/0053; B01J19/0073; B01J8/00; B01J8/008; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00477; B01J2208/00495; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/0015; B01J2219/00155; B01J2219/02; B01J2219/0204; B01J2219/0245
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) | 1950-03-10 | 1950-09-09 | 1951-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-10 | 1954-09-09 | 1955-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-10 | 1958-09-09 | 1959-03-11 | $7700.00 | Window Closed / Lapsed |