Patent US3024283A successfully refreshed from Google Patents.
US3024283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of quaternary ammonium compounds
Assignee: Armour and Co
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Filing: 1958-04-01
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Granted: 1962-03-06
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Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Lincoln D Metcalfe
- 👤 Milton A Mitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:39
CPC Classifications
B; B01; B01J; B01J39/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR THE PRODUCTION OF A LONG-CHAIN QUATERNARY AMMONIUM COMPOUND COMPRISING THE STEPS OF ADSORBING ON AN INSOLUBLE POLYSACCHARIDE CATIONIC EXCHANGER THE CATIONIC FRAGMENT OF A LONG-CHAIN QUATERNACY AMMOMIUM COMPOUND BY TREATING SAID EXCHANGER WITH A SUBSTANTIALLY NON-AQUEOUS SOLVENT SOLUTION OF SAID QUATERNACY AMMONIUM COMPOUND, PASSING THROUGH SAID EXCHANGER A SUBSTANTIALLY NON-AQUEOUS ELUANT SOLUTION OF AN IONIZABLE COMPOUND BEING A PRESELECTED ANIONIC FRAGMENT, SAID ELUANT SOLUTION BEING AT A PH BETWEEN ABOUT 0.1 TO ABOUT 5.0, TO CAUSE A REACTION BETWEEN SAID CATIONIC AND ANIONIC FRAGMENT TO FORM A LONG-CHAIN QUATERNARY AMMONIUM COMPOUND, AND RECOVERING IN THE ELUATE THE QUATERNACY AMMONIUM COMPOUND THIS FORMED.
Claim 2
Dependent Claim
105 words
A PROCESS FOR THE PRODUCTION OF A LONG-CHAIN QUATERNARY AMMONIUM COMPOUND COMPRISING THE STEPS OF ADSORBING ON AN INSOLUBLE POLYSACCHARIDE CATIONIC EXCHANGER THE CATIONIC FRAGMENT OF A LONG-CHAIN QUATERNACY AMMOMIUM COMPOUND BY TREATING SAID EXCHANGER WITH A SUBSTANTIALLY NON-AQUEOUS SOLVENT SOLUTION OF SAID QUATERNACY AMMONIUM COMPOUND, PASSING THROUGH SAID EXCHANGER A SUBSTANTIALLY NON-AQUEOUS ELUANT SOLUTION OF AN IONIZABLE COMPOUND BEING A PRESELECTED ANIONIC FRAGMENT, SAID ELUANT SOLUTION BEING AT A PH BETWEEN ABOUT 0.1 TO ABOUT 5.0, TO CAUSE A REACTION BETWEEN SAID CATIONIC AND ANIONIC FRAGMENT TO FORM A LONG-CHAIN QUATERNARY AMMONIUM COMPOUND, AND RECOVERING IN THE ELUATE THE QUATERNACY AMMONIUM COMPOUND THIS FORMED.
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |