US2960536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of nitrosamines
Assignee: FMC Corp
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Filing: 1957-04-11
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Granted: 1960-11-15
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Expires: 1977-04-11
Abstract
No abstract record available.
Inventors
- 👤 John W Getz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:22
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/20; C07C47/21; C07C291/00; C07C291/02; C07C291/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR THE PREPARTION OF NITROSO DIALKYLAMINE WHICH COMPRISES FORMING AN AQUEOUS SOLUTION CONTAINING A MIXTURE FREE DIALKYLAMINE AND DIALKYLAMINE SALT SELECTED FROM THE GROUP CONSISTING OF SULFURIC AND HYDROCHLORIC ACID SALTS, SAID SOLUTION HAVING A PH OF AT LEAST 7 AND CONTAINING NOT MORE THAN ONE-TENTH MOLE OF FREE DIALKYLAMINE PER MOLE OF TOTAL AMINE, ADDING APPROXIMATELY ONE MOLE OF SOLID ALKALI METAL NITRITE PER MOLE OF TOTAL DIALKYLAMINE, ANDTHEN ADDING AN ACID SELECTED FROM THE GROUP CONSISTING OF SULFURIC AND HYDROCHLORIC IN SUFFICIENT QUANTITY TO LOWER THE PH TO WITHIN THE RANGE OF APPROXIMATELY 5 TO APPROXIMATELY 2.
Claim 2
Dependent Claim
101 words
A PROCESS FOR THE PREPARTION OF NITROSO DIALKYLAMINE WHICH COMPRISES FORMING AN AQUEOUS SOLUTION CONTAINING A MIXTURE FREE DIALKYLAMINE AND DIALKYLAMINE SALT SELECTED FROM THE GROUP CONSISTING OF SULFURIC AND HYDROCHLORIC ACID SALTS, SAID SOLUTION HAVING A PH OF AT LEAST 7 AND CONTAINING NOT MORE THAN ONE-TENTH MOLE OF FREE DIALKYLAMINE PER MOLE OF TOTAL AMINE, ADDING APPROXIMATELY ONE MOLE OF SOLID ALKALI METAL NITRITE PER MOLE OF TOTAL DIALKYLAMINE, ANDTHEN ADDING AN ACID SELECTED FROM THE GROUP CONSISTING OF SULFURIC AND HYDROCHLORIC IN SUFFICIENT QUANTITY TO LOWER THE PH TO WITHIN THE RANGE OF APPROXIMATELY 5 TO APPROXIMATELY 2.
References Cited (Backward Citations)
US1643428A
Cited
US2419718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |