Patent US2796327A successfully refreshed from Google Patents.
US2796327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing carbon black, acrylonitrile and hydrogen cyanide
Assignee: Phillips Petroleum Co
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Filing: 1953-08-21
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Granted: 1957-06-18
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Expires: 1973-08-21
Abstract
No abstract record available.
Inventors
- 👤 Lyle W Pollock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:06
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/487; C01; C01C; C01C3/00; C01C3/02; C01C3/0208; C01C3/0237; C09C1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE PROCESS OF PRODUCING HYDROGEN CYANIDE BY QUENCHING THE HOT EFFUENT CARBON MONOXIDE AND WATER VAPOR CONTAINING GAS OF AN INCOMPLETE COMBUSTION TYPE CARBON BLACK FURNACE TO BELOW 1600*F. BUT NOT BELOW THE TEMPERATURE AT WHICH IT WILL REACT WITH AMMONIA TO PRODUCE HYDROCYANIC ACID WITH AN AMMONIA CONTAINING FIRST LIQUID AND SIMULTANEOUSLY THEREBY REACTING A SUBSTANTIAL PORTION OF SAID AMMONIA WITH SID CARBON MONOXIDE IN SAID EFFLENT GAS TO PRODUCE HYDROGEN CYANIDE AND ALSO THEREBY EVAPORATING SAID FIRST LIQUID COMPLETELY IN SAID EFFLENT GAS, AND THEN CONDENSING AND SEPARATING A SECOND LIQUID CONTAINING SAID HYDROGEN CYANIDE FROM SAID GAS BY COOLING SAID GAS BELOW ITS DEW POINT.
Claim 2
Dependent Claim
108 words
THE PROCESS OF PRODUCING HYDROGEN CYANIDE BY QUENCHING THE HOT EFFUENT CARBON MONOXIDE AND WATER VAPOR CONTAINING GAS OF AN INCOMPLETE COMBUSTION TYPE CARBON BLACK FURNACE TO BELOW 1600*F. BUT NOT BELOW THE TEMPERATURE AT WHICH IT WILL REACT WITH AMMONIA TO PRODUCE HYDROCYANIC ACID WITH AN AMMONIA CONTAINING FIRST LIQUID AND SIMULTANEOUSLY THEREBY REACTING A SUBSTANTIAL PORTION OF SAID AMMONIA WITH SID CARBON MONOXIDE IN SAID EFFLENT GAS TO PRODUCE HYDROGEN CYANIDE AND ALSO THEREBY EVAPORATING SAID FIRST LIQUID COMPLETELY IN SAID EFFLENT GAS, AND THEN CONDENSING AND SEPARATING A SECOND LIQUID CONTAINING SAID HYDROGEN CYANIDE FROM SAID GAS BY COOLING SAID GAS BELOW ITS DEW POINT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |