Patent US2973393A successfully refreshed from Google Patents.
US2973393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorination of acetylenes
Assignee: Dow Chemical Co
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Filing: 1958-10-02
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Granted: 1961-02-28
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Expires: 1978-10-02
Abstract
No abstract record available.
Inventors
- 👤 Roger F Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:31
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS WHICH COMPRISES REACTING BY CONTACTING, IN THE ABSENCE OF A CATALYST, AN ALKYLACETYLENE HAVING FROM 1 TO 4 CARBON ATOMS IN THE ALKYL SUBSTITUENT WITH AT LEAST 2 MOLES OF CHLORINE PER MOLE OF ACETYLENE IN A REACTION ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 20* AND 100*C., AND, WITHDRAWING FROM SAID REACTION ZONE AT LEAST 1 OF THE FOLLOWING PRODUCTS, 1,2,3-TRICHLORO1-ALKENE, 1,1,2,2-TETRACHLOROALKANE, AND 1,2,2,3-TETRACHLOROALKANE.
Claim 2
Dependent Claim
67 words
A PROCESS WHICH COMPRISES REACTING BY CONTACTING, IN THE ABSENCE OF A CATALYST, AN ALKYLACETYLENE HAVING FROM 1 TO 4 CARBON ATOMS IN THE ALKYL SUBSTITUENT WITH AT LEAST 2 MOLES OF CHLORINE PER MOLE OF ACETYLENE IN A REACTION ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 20* AND 100*C., AND, WITHDRAWING FROM SAID REACTION ZONE AT LEAST 1 OF THE FOLLOWING PRODUCTS, 1,2,3-TRICHLORO1-ALKENE, 1,1,2,2-TETRACHLOROALKANE, AND 1,2,2,3-TETRACHLOROALKANE.
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) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |