US2564532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of naphthene hydrocarbons
Assignee: Sunoco Inc
•
Filing: 1948-06-16
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Granted: 1951-08-14
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Expires: 1968-06-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hirschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:00
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR SEPARATING TWO NAPHTHENE HYDROCARBONS WHICH COMPRISES INTRODUCING A LIQUID MIXTURE OF SUCH HYDROCARBONS, ESSENTIUALLY FREE OF UNSATURATE HYDROCARBONS, INTO A BODY OF ACTIVATED CARBON, THEREBY SELECTIVELY ADSORBING ONE OF SAID HYDROCARBONS, AND SEPARATING FROM THE ADSORBENT A FILTRATE FRACTION WHICH CONTAINS ONLY A PORTION OF THE TOTAL HYDROCARBONS INTRODUCED, THEREBY OBTAINING A PRODUCT IN WHICH THE PROPORTION OF ONE OF SAID HYDROCARBONS TO THE OTHER OF SAID HYDROCARBONS IS HIGHER THAN IN THE STARTING MIXTURE.
Claim 2
Dependent Claim
78 words
A PROCESS FOR SEPARATING TWO NAPHTHENE HYDROCARBONS WHICH COMPRISES INTRODUCING A LIQUID MIXTURE OF SUCH HYDROCARBONS, ESSENTIUALLY FREE OF UNSATURATE HYDROCARBONS, INTO A BODY OF ACTIVATED CARBON, THEREBY SELECTIVELY ADSORBING ONE OF SAID HYDROCARBONS, AND SEPARATING FROM THE ADSORBENT A FILTRATE FRACTION WHICH CONTAINS ONLY A PORTION OF THE TOTAL HYDROCARBONS INTRODUCED, THEREBY OBTAINING A PRODUCT IN WHICH THE PROPORTION OF ONE OF SAID HYDROCARBONS TO THE OTHER OF SAID HYDROCARBONS IS HIGHER THAN IN THE STARTING MIXTURE.
References Cited (Backward Citations)
US2449402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |