US2620259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydrogen cyanide
Assignee: Union Oil Company of California
•
Filing: 1949-06-18
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Granted: 1952-12-02
•
Expires: 1969-06-18
Abstract
No abstract record available.
Inventors
- 👤 Art C Mckinnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:56
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD FOR PREPARING HYDROGEN CYANIDE WHICH COMPRISES FORMING A COMBUSTIBLE REACTANT GAS MIXTURE ESSENTIALLY COMPRISING A MONOHALOGENATED SATURATED ALIPHATIC HYDROCARBON HAVING FROM 1 TO 4 CARBON ATOMS, AMMONIA AND OXYGEN; CONDUCTING SAID MIXTURE THROUGH AN ELONGATED ENCLOSED PREHEATING ZONE INTO A COMBUSTION ZONE; BURNING SAID MIXTURE WITHIN SAID COMBUSTION ZONE IN THE ABSENCE OF A CATALYST AND WITH THE FORMATION OF A FREE FLAME; EFFECTING HEAT EXCHANGE BETWEEN THE HOT PRODUCTS OF SAID COMBUSTION AND THE REACTANT GAS MIXTURE PASSING THROUGH SAID PREHEATING ZONE BY REVERSING THE DIRECTION OF FLOW OF SAID HOT COMBUSTION PRODUCTS AND CONDUCTING THEM ALONG THE OUTSIDE OF SAID PREHEATING ZONE IN A DIRECTION SUBSTANTIALLY COUNTERCURRENT TO THAT OF THE REACTANT GAS PASSING THROUGH SAID PREHEATING ZONE; AND SUBSEQUENTLY SEPARATING HYDROGEN CYANIDE FROM SAID COMBUSTION PRODUCTS.
Claim 2
Independent Claim
131 words
THE METHOD FOR PREPARING HYDROGEN CYANIDE WHICH COMPRISES FORMING A COMBUSTIBLE REACTANT GAS MIXTURE ESSENTIALLY COMPRISING A MONOHALOGENATED SATURATED ALIPHATIC HYDROCARBON HAVING FROM 1 TO 4 CARBON ATOMS, AMMONIA AND OXYGEN; CONDUCTING SAID MIXTURE THROUGH AN ELONGATED ENCLOSED PREHEATING ZONE INTO A COMBUSTION ZONE; BURNING SAID MIXTURE WITHIN SAID COMBUSTION ZONE IN THE ABSENCE OF A CATALYST AND WITH THE FORMATION OF A FREE FLAME; EFFECTING HEAT EXCHANGE BETWEEN THE HOT PRODUCTS OF SAID COMBUSTION AND THE REACTANT GAS MIXTURE PASSING THROUGH SAID PREHEATING ZONE BY REVERSING THE DIRECTION OF FLOW OF SAID HOT COMBUSTION PRODUCTS AND CONDUCTING THEM ALONG THE OUTSIDE OF SAID PREHEATING ZONE IN A DIRECTION SUBSTANTIALLY COUNTERCURRENT TO THAT OF THE REACTANT GAS PASSING THROUGH SAID PREHEATING ZONE; AND SUBSEQUENTLY SEPARATING HYDROGEN CYANIDE FROM SAID COMBUSTION PRODUCTS.
References Cited (Backward Citations)
US2006981A
Cited
US2069545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |