US2587595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of hydrogen halides from olefinically unsaturated compounds
Assignee: Shell Development Co
•
Filing: 1949-12-06
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Granted: 1952-03-04
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Expires: 1969-12-06
Abstract
No abstract record available.
Inventors
- 👤 Harry A Cheney
- 👤 John H Raley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:03
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN A METHOD FOR SEPARATING THE HYDROGEN HALIDE AND THE OLEFINICALLY UNSATURATED ORGANIC COMPONENTS OF A LIQUID MIXTURE BY FRACTIONATION, THE IMPROVEMENT COMPRISING EFFECTING SAID FRACTIONATION IN THE PRESENCE OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN SULFIDE AND THIOLS, WHICH COMPOUND IS DISSOLVED IN THE SIAD LIQUID MIXTURE.
Claim 2
Dependent Claim
53 words
IN A METHOD FOR SEPARATING THE HYDROGEN HALIDE AND THE OLEFINICALLY UNSATURATED ORGANIC COMPONENTS OF A LIQUID MIXTURE BY FRACTIONATION, THE IMPROVEMENT COMPRISING EFFECTING SAID FRACTIONATION IN THE PRESENCE OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN SULFIDE AND THIOLS, WHICH COMPOUND IS DISSOLVED IN THE SIAD LIQUID MIXTURE.
References Cited (Backward Citations)
US2058465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |