Patent US2847482A successfully refreshed from Google Patents.
US2847482A
Expired / Lapsed
US
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Process for producing perchlorethylene
Assignee: Montedison SpA
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Filing: 1954-07-14
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Granted: 1958-08-12
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Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 Longiave Carlo
- 👤 Zanetti Federico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:06
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN THE PROCESS OF PRODUCING PERCHLORETHYLENE, WHICH COMPRISES REACTING A COMPOUND OF THE CLASS CONSISTING OF METHANE AND SATURATED AND UNSATURATED HYDROCARBONS HAVING 2 TO 3 CARBON ATOMS WITH AN EXCESS OF CHLORINE WHILE PASSING THROUGH A HOT ENCLOSED ZONE, THE IMPROVEMENT WHICH CONSISTS IN COOLING AND RECYCLING A PORTION OF THE GASEOUS PRODUCTS LEAVING THE ENCLOSED ZONE, WHICH PORTION REPRESENTS BETWEEN 76.6 AND 81.2% BY VOLUME OF THE GASEOUS CHARGE ENTERING THE ENCLOSED ZONE, AND ADJUSTING THE TEMPERATURE WITHIN SAID ENCLOSED ZONE TO BE TWEEN 350* AND 650*C.
Claim 2
Dependent Claim
89 words
IN THE PROCESS OF PRODUCING PERCHLORETHYLENE, WHICH COMPRISES REACTING A COMPOUND OF THE CLASS CONSISTING OF METHANE AND SATURATED AND UNSATURATED HYDROCARBONS HAVING 2 TO 3 CARBON ATOMS WITH AN EXCESS OF CHLORINE WHILE PASSING THROUGH A HOT ENCLOSED ZONE, THE IMPROVEMENT WHICH CONSISTS IN COOLING AND RECYCLING A PORTION OF THE GASEOUS PRODUCTS LEAVING THE ENCLOSED ZONE, WHICH PORTION REPRESENTS BETWEEN 76.6 AND 81.2% BY VOLUME OF THE GASEOUS CHARGE ENTERING THE ENCLOSED ZONE, AND ADJUSTING THE TEMPERATURE WITHIN SAID ENCLOSED ZONE TO BE TWEEN 350* AND 650*C.
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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |