US2761822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finishing treatment for activated carbon
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-05-13
•
Granted: 1956-09-04
•
Expires: 1972-05-13
Abstract
No abstract record available.
Inventors
- 👤 Leslie M Addison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:15
CPC Classifications
C; C10; C10B; C10B57/00; C10B57/04; C01; C01B; C01B32/00; C01B32/30; C01B32/306
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
A PROCESS FOR THE SEPARATION OF A LIQUID HYDROCARBON MIXTURE CONTAINING COMPONENTS OF DIFFERING MOLECULAR NATURE WHICH COMPRISES CONTACTING THE HYDROCARBON MIXTURE WITH AN ACTIVATED CARBON PREPARED BY TREATING AN ACTIVATED CARBON WITH A HIGH MOLECULAR WEIGHT ORGANIC MATERIAL FOLLOWED BY HEATING OF THE SAID TREATED CARBON AT CARBONIZING TEMPERATURES.
References Cited (Backward Citations)
US1700342A
Cited
US2008148A
Cited
US2423702A
Cited
US2448337A
Cited
US2470339A
Cited
US2449051A
Cited
US2549298A
Cited
US2635709A
Cited
US2586889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |