US2913494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the quaternization of 3-diethylamino-1-cyclohexyl-1-phenyl-propanol-1 with ethyl iodide
Assignee: Wyeth Holdings LLC
•
Filing: 1957-10-02
•
Granted: 1959-11-17
•
Expires: 1977-10-02
Abstract
No abstract record available.
Inventors
- 👤 Lobby Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:26
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/24; C07; C07C; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN THE PROCESS OF QUATERNIZING 3-DIETHYLAMINO-1CYCLOHEXY-1-PHENYLPROPANOL-1 WITH ETHYL IODIDE CONPRISING BRINGING THE SAID ETHYL IODIDEIINTO REACTIVE CONTACT WITH THE SAID DIETHYLAMINO CYCLOHEXYL PHENYLPROPANOL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN AT LEAST 1.5 PARTS OF A SOLVENTM THE SAID SOLVENT CONSISTING ESSENTAILLY OF SATURATED LIQUID DIALKYL KETONES HAVING A MINIMUM OF 5 CARBON ATOMS AND A MAXIMUM OF CARBON ATOMS, PER PART OF SAID DIETHYLAMINOCYCLOHEXYLPHENYLPROPANOL USING NO LARGER EXCESS OF ETHYL IODIDE THAN 100% OVER STOICHIOMETRICAL.
Claim 2
Dependent Claim
78 words
IN THE PROCESS OF QUATERNIZING 3-DIETHYLAMINO-1CYCLOHEXY-1-PHENYLPROPANOL-1 WITH ETHYL IODIDE CONPRISING BRINGING THE SAID ETHYL IODIDEIINTO REACTIVE CONTACT WITH THE SAID DIETHYLAMINO CYCLOHEXYL PHENYLPROPANOL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN AT LEAST 1.5 PARTS OF A SOLVENTM THE SAID SOLVENT CONSISTING ESSENTAILLY OF SATURATED LIQUID DIALKYL KETONES HAVING A MINIMUM OF 5 CARBON ATOMS AND A MAXIMUM OF CARBON ATOMS, PER PART OF SAID DIETHYLAMINOCYCLOHEXYLPHENYLPROPANOL USING NO LARGER EXCESS OF ETHYL IODIDE THAN 100% OVER STOICHIOMETRICAL.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |