US2653904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for refining chlorinated benzenes
Assignee: Honeywell International Inc
•
Filing: 1952-01-22
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Granted: 1953-09-29
•
Expires: 1972-01-22
Abstract
No abstract record available.
Inventors
- 👤 Delbert L Hanna
- 👤 Barney O Strom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:27
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/383; C07C17/386
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
IN A METHOD OF REFINING NUCLEAR CHLORINATED AROMATIC HYDROCARBON MIXTURES SELECTED FROM THE GROUP CONSISTING OF CHLORINATED BENZENES, CLORINATED TOLUNES, CHLORINATED XYLENES, CHLORINATED NAPHTHALENES AND CHLORINATED THIOPHENES CONTAINING AS IMPURITIES CORROSIVE COMPOUNDS, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE CRUDE NUCLEAR CHLORINATED AROMATIC HYDROCARBON MIXURE TO STEAM RECTIFCATION IN THE PRESENCE OF BOTH CAUSTIC SOLUTION AND AMMONIA, REMOVIN THE DESIRED CHLORINATED PRODUCT AS DISTILLATE FROM THE MIXTURE AND LEAVING AS BOTTOMS THE IMPURITIES IN THE NUCLEAR CHLORINATED AROMATIC HYDROCARBON MIXTURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |