US3586691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 2 - benzothiazolones from aromatic nitro compounds
Assignee: Olin Corp
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Filing: 1968-10-30
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Granted: 1971-06-22
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Expires: 1988-10-30
Abstract
Abstract IN THE PROCESS FOR PREPARING 2-BENZOTHIAZOLONES BY REACTING CARBONYL SULFIDE WITH AN AROMATIC NITRO COMPOUND IN WHICH AT LEAST ONE OF THE TWO ORTHO POISITIONS IS UNSUBSTITUTED, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF SODIUM HYDROSULFIDE, AND RECOVERING THE 2-BENZOTHIAZOLONES PRODUCED THEREBY.
Inventors
- 👤 Peter H Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:12
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/68
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |