US2810746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonation of propylene trimer and tetramer
Assignee: Tennessee Corp
•
Filing: 1955-04-08
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Granted: 1957-10-22
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Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 Walter H C Rueggeberg
- 👤 Thomas W Sauls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:16
CPC Classifications
C; C07; C07C; C07C309/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR THE SULFONATION OF PROPLYENE TRIMER AND PROPYLENE TETRAMER WHICH COMPRISES SULFONATING SAID PROPYLENIC MATERIAL WITH SULFUR TRIOXIDE DISSOLVED IN LIQUID SULFUR DIOXIDE IN THE PRESENCE OF A QUANTITY OF ACETIC ACID CATALYST WITHIN THE APPROXIMATE PROPORTIONS OF 0.125-0.5 MOLE OF SAID ACID PER MOLE OF SULFUR TRIOXIDE.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE SULFONATION OF PROPLYENE TRIMER AND PROPYLENE TETRAMER WHICH COMPRISES SULFONATING SAID PROPYLENIC MATERIAL WITH SULFUR TRIOXIDE DISSOLVED IN LIQUID SULFUR DIOXIDE IN THE PRESENCE OF A QUANTITY OF ACETIC ACID CATALYST WITHIN THE APPROXIMATE PROPORTIONS OF 0.125-0.5 MOLE OF SAID ACID PER MOLE OF SULFUR TRIOXIDE.
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |