US2745867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorination of perhaloacetonitriles over an improved chromium fluoride catalyst
Assignee: Dow Chemical Co
•
Filing: 1955-01-31
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Granted: 1956-05-15
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Expires: 1975-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert P Ruh
- 👤 Ralph A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:43
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/01; C07C255/10; C07C21/00; C07C21/02; C07C21/18; C07C253/00; C07C253/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE PROCESS OF FLUORINATING A PERHALOACETONITRILE CORRESPONDING TO THE GENERAL FORMULA
Claim 2
Dependent Claim
11 words
THE PROCESS OF FLUORINATING A PERHALOACETONITRILE CORRESPONDING TO THE GENERAL FORMULA
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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |