US2560950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of o-cresol derivatives
Assignee: Dow Chemical Co
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Filing: 1949-12-23
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Granted: 1951-07-17
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Expires: 1969-12-23
Abstract
No abstract record available.
Inventors
- 👤 James D Head
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C37/0555
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A METHOD OF PRODUCING 6-FLUORO-O-CRESOL THAT COMPRISES (1) DECHLORINATING AND REDUCING 5-CHLORO-3-FLUOROSALIGENIN DIACETATE TO 6-FLUOROO-CRESOL ACETATE BY THE ACTION OF TWO MOLS OF HYDROGEN PER MOL OF THE 5-CHLORO-3-FLUOROSALOGENIN DIACETATE IN THE PRESENCE OF A HYDROGEN ION ACCEPTOR AND A PALLADIUM CATALYST, AND (2) 6-FLUORO-O-CRESOL.
Claim 2
Independent Claim
45 words
A METHOD OF PRODUCING 6-FLUORO-O-CRESOL THAT COMPRISES (1) DECHLORINATING AND REDUCING 5-CHLORO-3-FLUOROSALIGENIN DIACETATE TO 6-FLUOROO-CRESOL ACETATE BY THE ACTION OF TWO MOLS OF HYDROGEN PER MOL OF THE 5-CHLORO-3-FLUOROSALOGENIN DIACETATE IN THE PRESENCE OF A HYDROGEN ION ACCEPTOR AND A PALLADIUM CATALYST, AND (2) 6-FLUORO-O-CRESOL.
References Cited (Backward Citations)
US2485146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |