US3637863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3 5-di-t-butyl-4-hydroxybenzyl phenyl sulfides
Assignee: Millennium Petrochemicals Inc
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Filing: 1967-11-22
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Granted: 1972-01-25
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Expires: 1987-11-22
Abstract
Abstract COMPOUND HAVING THE FORMULA 2,6-DI(C(-CH3)3-),4-((R1,R2,R3,R4,R5-PHENYL)-(CH2)N-S- CH2-)PHENOL N IS A POSITIVE INTEGER RANGING FROM 0 TO 22; AND R1,R2,R3, R4 AND R5 IS EACH H OR AN ALKYL RADICAL HAVING 1 TO 22 CARBON ATOMS WHICH MAY BE STRAIGHT CHAIN OR BRANCHED. THESE COMPOUNDS ARE USEFUL FOR STABILIZING ORGANIC MATERIALS.
Inventors
- 👤 Harry Braus
- 👤 Jay R Woltermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/12; C09K15/14; C07; C07C; C07C323/00; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929
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 |