US3652680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cycloaliphatic sulfides
Assignee: Pennwalt Corp
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Filing: 1969-08-08
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Granted: 1972-03-28
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Expires: 1989-08-08
Abstract
Abstract CYCOALKANE BIS(ALKYLSULFIDE) COMPOUNDS OF STRUCTURE (R1-S-),R2,(R1-S-R''-)CYCLOHEXANE (I) AND BIS(R1-S-)HEXAHYDRO-4,7-METHANOINDAN WHERE R1 IS HIGHER ALKYL, R2 IS H OR LOWER ALKYL AND R'' IS LOWER ALKYLENE AND THE USED OF THESE COMPOUNDS IN POLYOLEFINS. AS ANTIOXIDANT-SYNERGISTS.
Inventors
- 👤 Bernard Buchholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:54
CPC Classifications
C; C07; C07C; C07C323/00; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |