US2612502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of cycloheximide
Assignee: Pharmacia and Upjohn Co
•
Filing: 1947-02-17
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Granted: 1952-09-30
•
Expires: 1967-02-17
Abstract
No abstract record available.
Inventors
- 👤 Byron E Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:59
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/86; C07D211/88; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/897
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR THE RECOVERY OF CYCLOHEXIMIDE FROM AN ACIDIC STREPTOMYCES GRISEUS FERMENTATION BEER, WHICH COMPRISES TREATING THE BEER WITH ACTIVATED ADSORPTIVE CARBON, ELUTING THE ADSORBED CYCLOHEXIMIDE THEREFROM WITH AT LEAST ONE SOLVENT OF THE GROUP CONSISTING OF WATER-MISCIBLE ALCOHOLS AND KETONES, REMOVING THE ELUTING LIQUID, DISSOLVING THE CYCLOHEXIMIDE-CONTAINING RESIDUE IN WATER AND EXTRACTING THE CYCLOHEXIMIDE FROM THE AQUEOUS SOLUTION WITH A CHLORINATED HYDROCARBON SOLVENT.
Claim 2
Dependent Claim
65 words
A PROCESS FOR THE RECOVERY OF CYCLOHEXIMIDE FROM AN ACIDIC STREPTOMYCES GRISEUS FERMENTATION BEER, WHICH COMPRISES TREATING THE BEER WITH ACTIVATED ADSORPTIVE CARBON, ELUTING THE ADSORBED CYCLOHEXIMIDE THEREFROM WITH AT LEAST ONE SOLVENT OF THE GROUP CONSISTING OF WATER-MISCIBLE ALCOHOLS AND KETONES, REMOVING THE ELUTING LIQUID, DISSOLVING THE CYCLOHEXIMIDE-CONTAINING RESIDUE IN WATER AND EXTRACTING THE CYCLOHEXIMIDE FROM THE AQUEOUS SOLUTION WITH A CHLORINATED HYDROCARBON SOLVENT.
References Cited (Backward Citations)
US2521770A
Cited
US2532403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |