US3706771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkenyl sulfosuccinic anhydrides,acids and salts thereof
Assignee: Honeywell International Inc
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Filing: 1969-07-22
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Granted: 1972-12-19
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Expires: 1989-07-22
Abstract
Abstract ALKENYL SULFOSUCCINIC ANHYDRIDES, ACIDS AND ALKALI AND AMINE SALTS THEREOF AND THEIR PREPARATION BY REACTING ON ALKENYL SUCCINIC ANTHYDRIDE WITH SULFUR TRIOXIDE IN AN ANHYDROUS SOLVENT REACTION MEDIUM TO FORM THE ALKENYL SULFOSUCCINIC ANHYDRIDE WHICH IS CONVERTED TO THE ACID OR SALTS BY REACTION WITH WATER OR AQUEOUS BASE SOLUTIONS. THE COMPOUNDS ARE USEFUL AS SURFACE TENISON REDUCING AGENTS, ESPECIALLY ADAPTED FOR INCORPORATION IN ACID PLATING BATHS.
Inventors
- 👤 Frank J Kremers
- 👤 Michael S Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:19
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/20; C07C309/22; C25; C25D; C25D3/00; C25D3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |