US2559157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of isoparaffins
Assignee: Sunoco Inc
•
Filing: 1948-06-11
•
Granted: 1951-07-03
•
Expires: 1968-06-11
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hirschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR SEPARATING TWO ISOPARAFFIN HYDROCARBONS WHICH COMPRISES INTRODUCING A LIQUID MIXTURE OF SUCH HYDROCARBONS, ESSENTIALLY 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 PRO-
Claim 2
Dependent Claim
60 words
A PROCESS FOR SEPARATING TWO ISOPARAFFIN HYDROCARBONS WHICH COMPRISES INTRODUCING A LIQUID MIXTURE OF SUCH HYDROCARBONS, ESSENTIALLY 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 PRO-
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |