Patent US2732413A successfully refreshed from Google Patents.
US2732413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the recovery of benzene by
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:25
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A CYCLIC PROCESS ADAPTED FOR CONTINUOUS OPERATION FOR THE RECOVERY OF BENZENE OF HIGH PURITY FROM BENZENECONTAINING HYDROCARBON STOCKS WHICH COMPRISES SUBJECTING THE STOCK TO THE ACTION OF NICKEL AMMONIA CYANIDE TO FORM A SOLID CLATHRATE COMPOUND WITH BENZENE, SEPARATING THE CLATHRATE COMPOUND FROM THE STOCK, TREATING THE CLATHRATE COMPOUND WITH STEAM IN THE PRESENCE OF AMMONIA TO DECOMPOSE IT INTO BENZENE AND NICKEL AMMONIA CYANIDE, RECOVERING BENZENE AND RECYCLING THE NICKEL AMMONIA CYANIDE TO PROCESS ANOTHER PORTION OF THE STOCK.
Claim 2
Dependent Claim
81 words
A CYCLIC PROCESS ADAPTED FOR CONTINUOUS OPERATION FOR THE RECOVERY OF BENZENE OF HIGH PURITY FROM BENZENECONTAINING HYDROCARBON STOCKS WHICH COMPRISES SUBJECTING THE STOCK TO THE ACTION OF NICKEL AMMONIA CYANIDE TO FORM A SOLID CLATHRATE COMPOUND WITH BENZENE, SEPARATING THE CLATHRATE COMPOUND FROM THE STOCK, TREATING THE CLATHRATE COMPOUND WITH STEAM IN THE PRESENCE OF AMMONIA TO DECOMPOSE IT INTO BENZENE AND NICKEL AMMONIA CYANIDE, RECOVERING BENZENE AND RECYCLING THE NICKEL AMMONIA CYANIDE TO PROCESS ANOTHER PORTION OF THE STOCK.
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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |