Patent US2974171A successfully refreshed from Google Patents.
US2974171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing 2, 6-di-tert-butyl-4-benzoyl phenol
Assignee: Ethyl Corp
•
Filing: 1957-12-18
•
Granted: 1961-03-07
•
Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Coffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:42
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/02; C10M129/04; C10M129/10; C07; C07C; C07C37/00; C07C37/64; C07C37/66; C07C45/00; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C07F; C07F1/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2215/00; C10M2215/16; C10M2227/00; C10M2227/08; C10M2227/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
PROCESS FOR THE PREPARATION OF 2,6-DI-TERT-BUTYL-4BENZOYL PHENOL WHICH COMPRISES REACTING THE SODIUM SALT OF 2,6-DI-TERT-BUTYL PHENOL WITH A BENZOYL HALIDE.
Claim 2
Dependent Claim
20 words
PROCESS FOR THE PREPARATION OF 2,6-DI-TERT-BUTYL-4BENZOYL PHENOL WHICH COMPRISES REACTING THE SODIUM SALT OF 2,6-DI-TERT-BUTYL PHENOL WITH A BENZOYL HALIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |