Patent US2694086A successfully refreshed from Google Patents.
US2694086A
Expired / Lapsed
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Sulfonation of poly-alkyl substituted aromatic hydrocarbons
Assignee: Colgate Palmolive Co
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Filing: 1949-11-23
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Granted: 1954-11-09
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Expires: 1969-11-23
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Joseph Edward
- 👤 Trent Walter Russel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:25
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
AN IMPROVED PROCESS FOR SULFONATING POLYALKYLATED AROMATIC HYDROCARBONS WHICH CONSISTS IN REACTING A SULFONATING AGENT WITH A HYDROCARBON MIXTURE WHICH DISTILLS BETWEEN ABOUT 250* AND ABOUT 400* C. AND WHICH CONTAINS PRINCIPALLY ALKYLATED BENZENE HOMOLOGUES OF THE TYPE REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
43 words
AN IMPROVED PROCESS FOR SULFONATING POLYALKYLATED AROMATIC HYDROCARBONS WHICH CONSISTS IN REACTING A SULFONATING AGENT WITH A HYDROCARBON MIXTURE WHICH DISTILLS BETWEEN ABOUT 250* AND ABOUT 400* C. AND WHICH CONTAINS PRINCIPALLY ALKYLATED BENZENE HOMOLOGUES OF THE TYPE REPRESENTED BY THE GENERAL FORMULA
References Cited (Backward Citations)
US2223364A
Cited
USRE22548E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |