US2543648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of chloro-olefins
Assignee: Dow Chemical Co
•
Filing: 1943-03-22
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Granted: 1951-02-27
•
Expires: 1963-03-22
Abstract
No abstract record available.
Inventors
- 👤 Charles J Strosacker
- 👤 Forrest C Amstutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:47
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD FOR THE PRODUCTION OF A CHLOROOLEFINE WHICH COMPRISES REACTING SODIUM HYDROXIDE WITH AN OLEFINE CHLORIDE IN THE PRESENCE, AS A REACTION MEDIUM, OF AT LEAST ONE MOLECULAR EQUIVALENT OF A COMPOUND SELECTED FROM THE CLASS CONSISTING OF ALIPHATIC HYDROXY-ETHERS, ARYLOXYALIPHATIC ALCOHOLS AND ALIPHATIC POLYHYDRIC ALCOHOLS PER MOLE OF THE SODIUM HYDROXIDE.
Claim 2
Independent Claim
53 words
A METHOD FOR THE PRODUCTION OF A CHLOROOLEFINE WHICH COMPRISES REACTING SODIUM HYDROXIDE WITH AN OLEFINE CHLORIDE IN THE PRESENCE, AS A REACTION MEDIUM, OF AT LEAST ONE MOLECULAR EQUIVALENT OF A COMPOUND SELECTED FROM THE CLASS CONSISTING OF ALIPHATIC HYDROXY-ETHERS, ARYLOXYALIPHATIC ALCOHOLS AND ALIPHATIC POLYHYDRIC ALCOHOLS PER MOLE OF THE SODIUM HYDROXIDE.
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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |