Patent US3104247A successfully refreshed from Google Patents.
US3104247A
Expired / Lapsed
US
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Process for preparing alpha sulfo fatty acids and salts thereof
Assignee: Richardson Co
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Filing: 1962-02-01
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Granted: 1963-09-17
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Expires: 1982-02-01
Abstract
No abstract record available.
Inventors
- 👤 Gavlin Gilbert
- 👤 William M Boyer
- 👤 Daniel R Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:05
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/06; C07C303/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR SULFONATING A SATURATED FATTY ACID WHICH COMPRISES DISSOLVING SAID FATTY ACID IN A SATURATED HYDROCARBON SOLVENT WHEREIN THE HYDROCARBON IN CHARACTERIZED BY THE ABSENCE OF BRANCHING, INTODUCING SULFURTRIOXIDE INTO SAID SOLUTION AT A MAXIMUM TEMPERATURE OF 35*C. AND SUBSEQUENTLY HEATING THE REACTION MASS TO A TEMPERATURE ABOVE 35*C. BUT NOT EXCEEDING ABOUT 100*C.
Claim 2
Dependent Claim
56 words
A PROCESS FOR SULFONATING A SATURATED FATTY ACID WHICH COMPRISES DISSOLVING SAID FATTY ACID IN A SATURATED HYDROCARBON SOLVENT WHEREIN THE HYDROCARBON IN CHARACTERIZED BY THE ABSENCE OF BRANCHING, INTODUCING SULFURTRIOXIDE INTO SAID SOLUTION AT A MAXIMUM TEMPERATURE OF 35*C. AND SUBSEQUENTLY HEATING THE REACTION MASS TO A TEMPERATURE ABOVE 35*C. BUT NOT EXCEEDING ABOUT 100*C.
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |