US3383410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of tetralkylammonium salts of benzene sulfonic acids
Assignee: Monsanto Co
•
Filing: 1964-02-26
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Granted: 1968-05-14
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Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Johnson Robert
- 👤 Le Moyne W Plischke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:37
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A PROCESS FOR THE PRODUCTION OF TETRA-ALKYLAMMONIUM SALTS OF BENZENOID HYDROCARBON SULFONIC ACIDS HAVING THE GENERAL STRUCTURE
Claim 2
Dependent Claim
17 words
A PROCESS FOR THE PRODUCTION OF TETRA-ALKYLAMMONIUM SALTS OF BENZENOID HYDROCARBON SULFONIC ACIDS HAVING THE GENERAL STRUCTURE
References Cited (Backward Citations)
FR1328327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |