US2695319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing verairyl
Assignee: —
•
Filing: —
•
Granted: 1954-11-23
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Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:32
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/23; C07C41/00; C07C41/01; C07C41/18; C07C41/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A PROCESS OF PRODUCING VERATRYLCHLORIDE BY CHLOROMETHYLATION OF VERATROLE, THE STEPS COMPRISING SATURATING A SOLUTION OF VERATROLE IN AN INERT ORGANIC SOLVENT WITH HYDROGEN CHLORIDE AND CONTINUOUSLY SUPPLYING FORMALDEHYDE AND GASEOUS HYDROGEN CHLORIDE TO SAID VERATROLE SOLUTION, THE TEMPERATURE DURING SAID CHLOROMETHYLATION NOT EXCEEDING ABOUT 23* C., THE INERT ORGANIC SOLVENT BEING NOT AFFECTED BY AND NOT REACTING WITH THE REACTION COMPONENTS UNDER THE REACTION CONDITIONS.
Claim 2
Dependent Claim
67 words
IN A PROCESS OF PRODUCING VERATRYLCHLORIDE BY CHLOROMETHYLATION OF VERATROLE, THE STEPS COMPRISING SATURATING A SOLUTION OF VERATROLE IN AN INERT ORGANIC SOLVENT WITH HYDROGEN CHLORIDE AND CONTINUOUSLY SUPPLYING FORMALDEHYDE AND GASEOUS HYDROGEN CHLORIDE TO SAID VERATROLE SOLUTION, THE TEMPERATURE DURING SAID CHLOROMETHYLATION NOT EXCEEDING ABOUT 23* C., THE INERT ORGANIC SOLVENT BEING NOT AFFECTED BY AND NOT REACTING WITH THE REACTION COMPONENTS UNDER THE REACTION CONDITIONS.
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) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |