US2950325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making fluorophenols
Assignee: Dow Chemical Co
•
Filing: 1958-06-06
•
Granted: 1960-08-23
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Britton
- 👤 Andrew J Dietzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A METHOD OF HYDROLYZING A BROMO-FLUORO-SUBSTITUTED AROMATIC COMPOUND TO PRODUCE A FLUROINE-CONTAINING PHENOL, WHICH METHOD COMPRISES HEATING A MIXTURE CONSISTING OF ONE GRAM MOLECULAR PROPORTION OF A BROMOFLUORO-SUBSTITUTED AROMATIC COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Independent Claim
34 words
A METHOD OF HYDROLYZING A BROMO-FLUORO-SUBSTITUTED AROMATIC COMPOUND TO PRODUCE A FLUROINE-CONTAINING PHENOL, WHICH METHOD COMPRISES HEATING A MIXTURE CONSISTING OF ONE GRAM MOLECULAR PROPORTION OF A BROMOFLUORO-SUBSTITUTED AROMATIC COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US1934656A
Cited
US2085429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |