US2705732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of vinyl chloride
Assignee: Societe Belge de lAzote et des Produits Chimiques du Marly SA
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Filing: 1951-03-14
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Granted: 1955-04-05
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Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Braconier Frederic Fran Albert
- 👤 Rayet Paulin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:09
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/07; C07C17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A PROCESS FOR MANUFACTURING VINYL CHLORIDE FROM ACTYLENE AND HYDROCHLORIC ACID GAS, THE STEPS OF PASSING A REACTION MIXTURE CONTAINING ACETYLENE, HYDROCHLORIC ACID GAS, AND FREE CHLORINE ACCIDENTALLY PRESENT IN THE LATTER, OVER A NICKEL CHLORIDE CATALYST TO CONVERT THE FREE CHLORINE INTO AN INNOCUOUS CHLORINATED ACETYLENE DERIVATIVE AND SUBSQUENTLY FORMING VINYL CHLORIDE BY PASSING THE REACTION MIXTURE AND THE DERIVATIVE OVER A MERCURIC CHLORIDE CATALYST.
Claim 2
Dependent Claim
67 words
IN A PROCESS FOR MANUFACTURING VINYL CHLORIDE FROM ACTYLENE AND HYDROCHLORIC ACID GAS, THE STEPS OF PASSING A REACTION MIXTURE CONTAINING ACETYLENE, HYDROCHLORIC ACID GAS, AND FREE CHLORINE ACCIDENTALLY PRESENT IN THE LATTER, OVER A NICKEL CHLORIDE CATALYST TO CONVERT THE FREE CHLORINE INTO AN INNOCUOUS CHLORINATED ACETYLENE DERIVATIVE AND SUBSQUENTLY FORMING VINYL CHLORIDE BY PASSING THE REACTION MIXTURE AND THE DERIVATIVE OVER A MERCURIC CHLORIDE CATALYST.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |