US2951102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorofluoromethylfluoroform
Assignee: Dow Chemical Co
•
Filing: 1958-04-30
•
Granted: 1960-08-30
•
Expires: 1978-04-30
Abstract
No abstract record available.
Inventors
- 👤 Eric R Larsen
- 👤 Robert P Ruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:52
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C19/10; C07C19/12; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
1 words
CHLOROFLUOROMETHYLFLUOROFORM.
Claim 2
Dependent Claim
1 words
CHLOROFLUOROMETHYLFLUOROFORM.
Claim 3
Independent Claim
45 words
A METHOD OF PREPARING CHLOROFLUOROMETHYLFLUROFORM WHICH COMPRISES: PASSING A HYDROGEN FLUORIDE AND CF2BRCHCIF THROUGH A CHROMIUM OXYFLUORIDE CATALYST IN A REACTION ZONE MAINTAINED AT A TEMPERATURE BETWEEN 200*C. AND THE DECOMPOSITION TEMPERATURE OF THE REACTANTS AND REACTION PRODUCTS AND SEPARATING CHLOROFLUOROMETHYLFLUOROFORM FROM THE REACTION MIXTURE.
Claim 4
Independent Claim
45 words
A METHOD OF PREPARING CHLOROFLUOROMETHYLFLUROFORM WHICH COMPRISES: PASSING A HYDROGEN FLUORIDE AND CF2BRCHCIF THROUGH A CHROMIUM OXYFLUORIDE CATALYST IN A REACTION ZONE MAINTAINED AT A TEMPERATURE BETWEEN 200*C. AND THE DECOMPOSITION TEMPERATURE OF THE REACTANTS AND REACTION PRODUCTS AND SEPARATING CHLOROFLUOROMETHYLFLUOROFORM FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |