US3042727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fluoroform
Assignee: Dow Chemical Co
•
Filing: 1959-06-04
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Granted: 1962-07-03
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Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Olstowski Franciszek
- 👤 Watson John Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:50
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/23
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
A PROCESS OF PREPARING FLUROFORM WHICH COMPRISES CONTACTING HYDROGEN AND A COMPOUND HAVING THE FORMULA CF3X, WHEREIN X REPRESENTS A HOLGEN SELECTED FROM THE GROUP CONSISTING OF BR AND 1, AT A TEMPERATURE RANGING FROM ABOUT 45/*C. TO ABOUT 900*C. FOR A RESIDENCE TIME RANGING FROM ABOUT 0.1 SECOND TO ABOUT 10 SECONDS, AND SEPARATING FLUOROFORM FROM THE REACTION PRODUCT.
Claim 2
Dependent Claim
60 words
A PROCESS OF PREPARING FLUROFORM WHICH COMPRISES CONTACTING HYDROGEN AND A COMPOUND HAVING THE FORMULA CF3X, WHEREIN X REPRESENTS A HOLGEN SELECTED FROM THE GROUP CONSISTING OF BR AND 1, AT A TEMPERATURE RANGING FROM ABOUT 45/*C. TO ABOUT 900*C. FOR A RESIDENCE TIME RANGING FROM ABOUT 0.1 SECOND TO ABOUT 10 SECONDS, AND SEPARATING FLUOROFORM FROM THE REACTION PRODUCT.
Claim 3
Dependent Claim
67 words
A PROCESS OF PREPARING FLUROFORM WHICH COMPRISES CONTACTING HYDROGEN AND A COMPOUND HAVING THE FORMULA CF3X, WHEREIN X REPRESENTS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CI, BR AND I, AT A TEMPERATURE RANGING FROM 450*C. TO ABOUT 900*C. FOR A RESIDENCE TIME RANGING FROM ABOUT 0.1 SECOND TO ABOUT 10 SECONDS, IN THE PRESENCE OF A COPPER CATALYST, AND SEPARATING FLUOROFORM FROM THE REACTION PRODUCT.
Claim 4
Dependent Claim
67 words
A PROCESS OF PREPARING FLUROFORM WHICH COMPRISES CONTACTING HYDROGEN AND A COMPOUND HAVING THE FORMULA CF3X, WHEREIN X REPRESENTS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CI, BR AND I, AT A TEMPERATURE RANGING FROM 450*C. TO ABOUT 900*C. FOR A RESIDENCE TIME RANGING FROM ABOUT 0.1 SECOND TO ABOUT 10 SECONDS, IN THE PRESENCE OF A COPPER CATALYST, AND SEPARATING FLUOROFORM FROM THE REACTION PRODUCT.
References Cited (Backward Citations)
US2615925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |