US3190919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of quaternary ammonium compounds
Assignee: General Mills Inc
•
Filing: 1961-06-14
•
Granted: 1965-06-22
•
Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Ronald R Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/06; C07C209/12; C07C303/00; C07C303/24; C07C303/32; C11; C11D; C11D1/00; C11D1/38; C11D1/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE PROCESS WHICH COMPRISES CONTACTING A WATER IMMISCIBLE ORGANIC SOLVENT SOLUTION OF A FATTY QUATERNARY AMMONIUM COMPOUND HAVING AN ANION OF A VOLATILE ACID WITH AN AQUEOUS SOLUTION OF A NON-VOLATILE ACID, PASSING A GAS INERT TO THE REACTION MIXTURE THROUGH SAID AQUEOUS SOLUTION, AND RECOVERING A QUATERNARY AMMONIUM COMPOUND HAVING AN ANION OF A NON-VOLATILE ACID.
Claim 2
Dependent Claim
57 words
THE PROCESS WHICH COMPRISES CONTACTING A WATER IMMISCIBLE ORGANIC SOLVENT SOLUTION OF A FATTY QUATERNARY AMMONIUM COMPOUND HAVING AN ANION OF A VOLATILE ACID WITH AN AQUEOUS SOLUTION OF A NON-VOLATILE ACID, PASSING A GAS INERT TO THE REACTION MIXTURE THROUGH SAID AQUEOUS SOLUTION, AND RECOVERING A QUATERNARY AMMONIUM COMPOUND HAVING AN ANION OF A NON-VOLATILE ACID.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |