US3337569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing o-nicotinoylcholine chloride
Assignee: Individual
•
Filing: 1965-06-24
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Granted: 1967-08-22
•
Expires: 1985-06-24
Abstract
No abstract record available.
Inventors
- 👤 Imhoff Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:48
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/80; B; B29; B29C; B29C39/00; B29C39/003; B29C39/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD OF PRODUCING O-NICOTINOYLCHOLINE CHLORIDE, COMPRISING THE STEPS OF REACTING IN A SOLVENT THEREFOR BETAIODO-ETHYLESTER OF NICOTINIC ACID WITH TRIMETHYLAMINE SO AS TO PRECIPITATE SOLID O-NICOTINOLYCHLOLINE IODIDE; SEPARATING THE THUS FORMED O-NICOTINOYCHLOLINE IODIDE FROM THE REACTION MIXTURE; AND REACTING SAID O-NICOTINOYLCHOLINE IODIDE IN A SOLVENT THEREFOR WITH SILVER CHLORIDE THEREBY CONVERTING SAID O-NICOTINOYLCHLOLINE IODIDE INTO O-NICOTINOYLCHLOLINE CHLORIDE.
Claim 2
Independent Claim
58 words
A METHOD OF PRODUCING O-NICOTINOYLCHOLINE CHLORIDE, COMPRISING THE STEPS OF REACTING IN A SOLVENT THEREFOR BETAIODO-ETHYLESTER OF NICOTINIC ACID WITH TRIMETHYLAMINE SO AS TO PRECIPITATE SOLID O-NICOTINOLYCHLOLINE IODIDE; SEPARATING THE THUS FORMED O-NICOTINOYCHLOLINE IODIDE FROM THE REACTION MIXTURE; AND REACTING SAID O-NICOTINOYLCHOLINE IODIDE IN A SOLVENT THEREFOR WITH SILVER CHLORIDE THEREBY CONVERTING SAID O-NICOTINOYLCHLOLINE IODIDE INTO O-NICOTINOYLCHLOLINE CHLORIDE.
References Cited (Backward Citations)
US2094608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |