Patent US3640976A successfully refreshed from Google Patents.
US3640976A
Expired / Lapsed
US
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Certain cycloalkylsulfenamides as prevulcanization inhibitors
Assignee: Monsanto Co
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Filing: 1970-03-09
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Granted: 1972-02-08
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Expires: 1990-03-09
Abstract
Abstract 4-((1-(R-S-)-PIPERIDIN-4-YL)-CH2-)PIPERIDINO WHERE X IS ONE, TWO OR THREE, AND WHEREIN R IS CYCLOALKYL OF 5 TO 12 CARBON ATOMS. WHEREIN A AND B TOGETHER WITH THE NITROGEN ATOM IS PIPERIDINYL, LOWER ALKYL PIPERIDINYL, ARYL PIPERIDINYL, 2,5DILOWER ALKYL PYRROLIDINYL, HEXAMETHYLENIMINYL, OR R-S-N(-A)-B INHIBITING PREMATURE VULCANIZATION WITH CYCLOALKYLSULFENAMIDES OF THE FORMULA
Inventors
- 👤 Kamel Boustany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:14
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08K5/44
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |