US2750398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resolution of carbonylics-containing gaseous mixtures
Assignee: Shell Development Co
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Filing: 1953-10-19
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Granted: 1956-06-12
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Expires: 1973-10-19
Abstract
No abstract record available.
Inventors
- 👤 Martin L Courter
- 👤 Robert L Magovern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:16
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; C07C45/78; C07C45/80; C07C45/81; C07C45/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE PROCESS FOR SEPARATING A CARBOXYLIC COMPOUND FROM A MIXTURE CONTAINING SAID CARBONYLIC COMPOUND IN ADMIXTURE WITH LOWER BOILING HYDROCARBONS AND NITROGEN WHICH COMPRISES SUBJECTING SAID MIXTURE TO RECTIFICATION IN A RECTIFYING ZONE, INTRODUCING A STREAM OF WET HYDROCARBONS ONTO SAID RECTIFYING ZONE AT A POINT ABOVE THE POINT OF INTRODUCTION OF SAID CARBONYLIC COMPOUND-CONTAINING MIXTURE INTO SAID RECTIFYING ZONE DURING SAID RECTIFYING, THEREBY SEPARATING A VAPOR FRACTION COMPRISING NITROGEN AND SAID LOWER BOILING HYDROCARBONS FREE OF ANY SUBSTAN-
Claim 2
Dependent Claim
79 words
THE PROCESS FOR SEPARATING A CARBOXYLIC COMPOUND FROM A MIXTURE CONTAINING SAID CARBONYLIC COMPOUND IN ADMIXTURE WITH LOWER BOILING HYDROCARBONS AND NITROGEN WHICH COMPRISES SUBJECTING SAID MIXTURE TO RECTIFICATION IN A RECTIFYING ZONE, INTRODUCING A STREAM OF WET HYDROCARBONS ONTO SAID RECTIFYING ZONE AT A POINT ABOVE THE POINT OF INTRODUCTION OF SAID CARBONYLIC COMPOUND-CONTAINING MIXTURE INTO SAID RECTIFYING ZONE DURING SAID RECTIFYING, THEREBY SEPARATING A VAPOR FRACTION COMPRISING NITROGEN AND SAID LOWER BOILING HYDROCARBONS FREE OF ANY SUBSTAN-
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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |