Patent US3717611A successfully refreshed from Google Patents.
US3717611A
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Phenol ethers and phenol esters as stabilizers
Assignee: Merck Patent GmbH
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Filing: 1970-05-05
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Granted: 1973-02-20
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Expires: 1990-05-05
Abstract
Abstract 2,6-DI-TERT-BUTYL-PHENOL ETHERS AND ESTERS OF THE FORMULA 1-(R1-O-),2,6-DI((H3C-)3C-),4-R2-BENZENE WHEREIN R1 IS SUBSTITUTED OR UNSUBSTITUTED ALKYL, ALKENYL, ARALKYL, OR THE ACYL RADICAL OF AN ACID OTHER THAN FORMIC ACID AND R2 IS R1 OR H ARE STABILIZERS FOR PLATICS OILS AND FATS AGAINST THERMAL AND/OR OXIDATIVE DEGRADATION.
Inventors
- 👤 B Dennler
- 👤 R Hesse
- 👤 M Engelhardt
- 👤 W Baumer
- 👤 W Fruhstorfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:14
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035; C07; C07C; C07C323/00; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C49/00; C07C49/76; C07C49/84; C08; C08K; C08K5/00; C08K5/0008; C08K5/005; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C09K15/08; C10; C10M; C10M2207/00; C10M2207/04; C10M2207/042; C10M2207/08; C10M2207/40; C10M2207/404; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/08; C10M2215/082; C10M2215/16; C10M2215/20; C10M2215/202; C10M2215/24; C10M2215/26; C10M2215/28; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/086
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |