US3138643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of trichloroethanes
Assignee: Monsanto Co
•
Filing: 1961-03-15
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Granted: 1964-06-23
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Expires: 1981-03-15
Abstract
No abstract record available.
Inventors
- 👤 Keith M Taylor
- 👤 Gene L Wofford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:36
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR THE PRODUCTION OF TRICHLOROETHANES FROM DICHLOROETHANES WHICH CONSISTS OF REACTING A DICHLOROETHANE AND CHLORINE IN MOLE PROPORTIONS OF FROM ABOUT 3:1 TO ABOUT 1:3 IN A REACTION ZONE HEATED TO A TEMPERATURE IN THE RANGE FROM ABOUT 350* C. TO ABOUT 500* C., THE RESIDENCE TIME OF THE REACTING GAS MIXURE IN THE REACTION ZONE BEING MAINTAINED WITHIN THE RANGE FROM ABOUT 0.05 TO ABOUT 0.5 SECOND.
Claim 2
Dependent Claim
70 words
A PROCESS FOR THE PRODUCTION OF TRICHLOROETHANES FROM DICHLOROETHANES WHICH CONSISTS OF REACTING A DICHLOROETHANE AND CHLORINE IN MOLE PROPORTIONS OF FROM ABOUT 3:1 TO ABOUT 1:3 IN A REACTION ZONE HEATED TO A TEMPERATURE IN THE RANGE FROM ABOUT 350* C. TO ABOUT 500* C., THE RESIDENCE TIME OF THE REACTING GAS MIXURE IN THE REACTION ZONE BEING MAINTAINED WITHIN THE RANGE FROM ABOUT 0.05 TO ABOUT 0.5 SECOND.
References Cited (Backward Citations)
CA511440A
Cited
US3012081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |