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Patent US3637802A successfully refreshed from Google Patents.
US3637802A
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US
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Hydroxy-dialkylbenzylthioalkanoates
Assignee: Deutsche Advance Produktion GmbH
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Filing: 1967-08-17
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Granted: 1972-01-25
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Expires: 1987-08-17
Abstract
Abstract ARE USED AS STABILIZERS FOR ORGANIC COMPOSITIONS. IN THE FORMULAE: N IS AN INTEGER FROM 1 TO 4 R1 AND R2 ARE ALKYL R3 FOR N=1 IS A MEMBER OF THE GROUP CONSISTING OF THIOETHER, ETHER, AND ALKYL RADICALS AND FOR N=2-4 AN ALKYLENE GROUP, AND X IS ALKYLENE. ((2-(HO-),3-R1,5-R2-PHENYL)-CH2-S-X-COO)N-R3 ((3-R1,4-(HO-),5-R2-PHENYL)-CH2-S-X-COO)N-R3 AND COMPOUNDS OF THE FORMULA
Inventors
- 👤 Heinz Eggensperger
- 👤 Volker Franzen
- 👤 Horst Muller
- 👤 Hans Stephan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:29
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; C09; C09K; C09K15/00; C09K15/04; C09K15/12; C09K15/14; C11; C11B; C11B5/00; C11B5/0071; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10N; C10N2050/00; C10N2050/015; C10N2050/02
Claims Analysis
Total Claims: 0
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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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |