US3175004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of quaternary ammonium nitrates
Assignee: Armour and Co
•
Filing: 1961-03-24
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Granted: 1965-03-23
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
- 👤 Sydney H Shapiro
- 👤 Murray C Cooperman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:52
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/89; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A PROCESS FOR PREPARING QUATERNARY AMMONIUM NITRATES HAVING LOW-CHLORIDE CONTENT, THE IMPROVEMENT OF REACTING, AT A TEMPERATURE ABOVE 50*C., QUATERNARY AMMONIUM CHLORIDE AND A REACTANT SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM NITRATE, SODIUM NITRATE AND POTASSIUM NITRATE IN A SUBSTANTIALLY NON-AQUEOUS REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF DIMETHYL FORMAMIDE AND ALKYL ALCOHOLS HAVING 1 TO 4 CARBON ATOMS SO AS TO FORM QUATERNARY AMMONIUM NITRATE AND A CHLORIDE SALT, SAID QUATERNARY AMMONIUM NITRATE BEING SOLUBLE AND SAID CHLORIDE SALT BEING SUBSTANTIALLY INSOLUBLE IN SAID REACTION MEDIUM.
Claim 2
Dependent Claim
91 words
IN A PROCESS FOR PREPARING QUATERNARY AMMONIUM NITRATES HAVING LOW-CHLORIDE CONTENT, THE IMPROVEMENT OF REACTING, AT A TEMPERATURE ABOVE 50*C., QUATERNARY AMMONIUM CHLORIDE AND A REACTANT SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM NITRATE, SODIUM NITRATE AND POTASSIUM NITRATE IN A SUBSTANTIALLY NON-AQUEOUS REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF DIMETHYL FORMAMIDE AND ALKYL ALCOHOLS HAVING 1 TO 4 CARBON ATOMS SO AS TO FORM QUATERNARY AMMONIUM NITRATE AND A CHLORIDE SALT, SAID QUATERNARY AMMONIUM NITRATE BEING SOLUBLE AND SAID CHLORIDE SALT BEING SUBSTANTIALLY INSOLUBLE IN SAID REACTION MEDIUM.
References Cited (Backward Citations)
GB735631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |