US2535677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of ether sulfonates
Assignee: Rohm and Haas Co
•
Filing: 1947-02-15
•
Granted: 1950-12-26
•
Expires: 1967-02-15
Abstract
No abstract record available.
Inventors
- 👤 Charles S Hollander
- 👤 Louis H Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/32; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
PROCESS FOR PREPARING DODECYLOXYETHANE SODIUM SULFONATE WHICH COMPRISES REACTING BY HEATING TOGETHER DODECYL ALCOHOL AND SODIUM ISETHIONATE IN THE PRESENCE OF SODIUM HYDROXIDE AS A CATALYST AT ABOUT 200* C. WITH REMOVAL OF WATER FORMED DURING THE REACTION.
Claim 2
Dependent Claim
38 words
PROCESS FOR PREPARING DODECYLOXYETHANE SODIUM SULFONATE WHICH COMPRISES REACTING BY HEATING TOGETHER DODECYL ALCOHOL AND SODIUM ISETHIONATE IN THE PRESENCE OF SODIUM HYDROXIDE AS A CATALYST AT ABOUT 200* C. WITH REMOVAL OF WATER FORMED DURING THE REACTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |