US3769353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of pentachlorophenol
Assignee: Monsanto Co
•
Filing: 1970-08-25
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Granted: 1973-10-30
•
Expires: 1990-08-25
Abstract
Abstract THE USE OF ALUMINUM AND COPPER AS A CATALYST IN THE CHLORINATION OF PHENOLIC COMPOUNDS TO PRODUCE PENTACHLOROPHENOL.
Inventors
- 👤 J Francis
- 👤 L Horcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:35
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/62
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |