US2624699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of crude acetone
Assignee: Honeywell International Inc
•
Filing: 1951-09-28
•
Granted: 1953-01-06
•
Expires: 1971-09-28
Abstract
No abstract record available.
Inventors
- 👤 George G Joris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/79; C07C45/85
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE PROCESS FOR THE PURIFICATION OF CRUDE ACETONE CONTAINING ALDEHYDE IMPURITIES WHICH COMPRISES TREATING SAID CRUDE ACETONE WITH A PURIFYING AGENT IN THE FORM OF A SUBSTANCE OF THE GROUP CONSISTING OF ACTIVATED CARBON, GRAPHITE, DIATOMACEOUS EARTH, ASBESTOS, PUMICE, COKE, MAGNESIA AND SULFONATED PHENOL-FORMALDEHYDE ANION EXCHANGE RESINS, IMPREGNATED WITH AN ALKALI METAL HYDROXIDE AND SEPARATING THE SO-TREATED ACETONE FROM ITS IMPURITIES.
Claim 2
Dependent Claim
61 words
THE PROCESS FOR THE PURIFICATION OF CRUDE ACETONE CONTAINING ALDEHYDE IMPURITIES WHICH COMPRISES TREATING SAID CRUDE ACETONE WITH A PURIFYING AGENT IN THE FORM OF A SUBSTANCE OF THE GROUP CONSISTING OF ACTIVATED CARBON, GRAPHITE, DIATOMACEOUS EARTH, ASBESTOS, PUMICE, COKE, MAGNESIA AND SULFONATED PHENOL-FORMALDEHYDE ANION EXCHANGE RESINS, IMPREGNATED WITH AN ALKALI METAL HYDROXIDE AND SEPARATING THE SO-TREATED ACETONE FROM ITS IMPURITIES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |