US3065056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing cyanogen
Assignee: Pure Oil Co
•
Filing: 1960-12-30
•
Granted: 1962-11-20
•
Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Marcellus J Geerts
- 👤 Hillis O Folkins
- 👤 Charles T O'malley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:38
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR THE PREPARATION OF CYANOGEN WHICH COMPRISES PASSING A MIXTURE OF HYDROGEN CYANIDE AND AN OXIDANT SELECTED FROM THE GROUP CONSISTING OF NO2, O2-NO2 MIXTURES, AND O2-NO MIXTURES, AT A TEMPERATURE OF ABOUT 100*-400*C., SUFFICIENT TO EFFECT REACTION BETWEEN THE OXIDANT AND HYDROGEN CYANIDE, OVER A CATALYST PREPARED BY IMPREGNATING A REFRACTORY OXIDE SUPPORT HAVING A B.E.T. SURFACE AREA IN EXCESS OF ABOUT 75 M.2/G., AND A WATER CONTENT NOT LESS THAN ABOUT 5% WT. WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THERMALLY DECOMPOSABLE SALTS, OXIDES, AND HYDROXIDES OF METALS OF GROUP I AND II OF THE PERIODIC TABLE, CHROMIUM, MOLYBDENUM, MANGANESE, IRON, AND NICKEL, TO A METAL CONTENT OF O.5-15.0% WT., AND CALCINING THE CATALYST AT 260*540*C. FOR A TIME SUFFICIENT TO EFFECT COMPLETION OF REACTION BETWEEN THE IMPREGNANT AND THE SUPPORT.
Claim 2
Dependent Claim
137 words
A PROCESS FOR THE PREPARATION OF CYANOGEN WHICH COMPRISES PASSING A MIXTURE OF HYDROGEN CYANIDE AND AN OXIDANT SELECTED FROM THE GROUP CONSISTING OF NO2, O2-NO2 MIXTURES, AND O2-NO MIXTURES, AT A TEMPERATURE OF ABOUT 100*-400*C., SUFFICIENT TO EFFECT REACTION BETWEEN THE OXIDANT AND HYDROGEN CYANIDE, OVER A CATALYST PREPARED BY IMPREGNATING A REFRACTORY OXIDE SUPPORT HAVING A B.E.T. SURFACE AREA IN EXCESS OF ABOUT 75 M.2/G., AND A WATER CONTENT NOT LESS THAN ABOUT 5% WT. WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THERMALLY DECOMPOSABLE SALTS, OXIDES, AND HYDROXIDES OF METALS OF GROUP I AND II OF THE PERIODIC TABLE, CHROMIUM, MOLYBDENUM, MANGANESE, IRON, AND NICKEL, TO A METAL CONTENT OF O.5-15.0% WT., AND CALCINING THE CATALYST AT 260*540*C. FOR A TIME SUFFICIENT TO EFFECT COMPLETION OF REACTION BETWEEN THE IMPREGNANT AND THE SUPPORT.
References Cited (Backward Citations)
US2839475A
Cited
US2884308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |