Patent US2806876A successfully refreshed from Google Patents.
US2806876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing salts of 3-hydroxypropane-1-sulfonic acid
Assignee: Boehme Fettchemie GmbH
•
Filing: 1954-05-12
•
Granted: 1957-09-17
•
Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Blaser Bruno
- 👤 Haas Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:19
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS FOR THE PREPARATION OF 3-HYDROXYPROPANE-L-SULFONIC ACID BY REACTING ALLYL ALCOHOL WITH BISULFITE IN PRESENCE OF OXYGEN, WHEREIN THE AMOUNT OF ALLY ALCOHOL TO BE USED FOR THE REACTION IS GRADUALLY ADDED TO THE ENTIRE AMOUNT OF AN APPROXIMATELY NEUTRAL SOLUTION OF THE BISULFITE, SAID SOLUTION COMPRISING AN OXIDIZING AGENT IN FINE DISPERSION A STATE OF OPTIMUM DISTRIBUTION BY VIGOROUSLY STIRRING THE SOLUTION DURING THE REACTION, AND WHEREIN THE ALKALI FREED DURING THE REACTION IS BEING NEUTRALIZED CONTINUOUSLY BY THE ADDITION OF AN ACID.
Claim 2
Dependent Claim
85 words
THE PROCESS FOR THE PREPARATION OF 3-HYDROXYPROPANE-L-SULFONIC ACID BY REACTING ALLYL ALCOHOL WITH BISULFITE IN PRESENCE OF OXYGEN, WHEREIN THE AMOUNT OF ALLY ALCOHOL TO BE USED FOR THE REACTION IS GRADUALLY ADDED TO THE ENTIRE AMOUNT OF AN APPROXIMATELY NEUTRAL SOLUTION OF THE BISULFITE, SAID SOLUTION COMPRISING AN OXIDIZING AGENT IN FINE DISPERSION A STATE OF OPTIMUM DISTRIBUTION BY VIGOROUSLY STIRRING THE SOLUTION DURING THE REACTION, AND WHEREIN THE ALKALI FREED DURING THE REACTION IS BEING NEUTRALIZED CONTINUOUSLY BY THE ADDITION OF AN ACID.
References Cited (Backward Citations)
US2504411A
Cited
US2653970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |