US2973252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactor apparatus for regenerative reforming of hydrocarbons
Assignee: Standard Oil Co
•
Filing: 1955-05-25
•
Granted: 1961-02-28
•
Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Stanley E Shields
- 👤 James F Wygant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; B; B01; B01J; B01J19/00; B01J19/02; B01J8/00; B01J8/008; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00477; B01J2208/00495; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0218
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2407135A
Cited
US1454708A
Cited
US2194335A
Cited
US2525821A
Cited
US2664347A
Cited
US2641582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |