US2625463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing hydrogen cyanide
Assignee: Babcock and Wilcox Co
•
Filing: 1946-04-27
•
Granted: 1953-01-13
•
Expires: 1966-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles L Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:18
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0208; C01C3/0212
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE METHOD OF PRODUCING NITROGEN COMPOUNDS COMPRISING CONTINUOUSLY PREHEATING A STREAM OF AIR BY CONTINUOUSLY PASSING THE AIR STREAM UPWARDLY THROUGH A DESCENDING STREAM OF HEATED SOLID INERT REFRACTORY MATERIAL IN THE LOWER CHAMBER OF A MOVING BED TYPE OF HEATER HAVING AN UPPER CHAMBER IN WHICH THE REFRACTORY MATERIAL IS HEATED; CONTINUOUSLY WITHDRAWING THE HEATED AIR FROM THE UPPER END OF THE LOWER CHAMBER; UTILIZING THE OXYGEN COMPONENT OF THE WITHDRAWN HEATED AIR TO SUPPORT COMBUSTION OF A FUEL TO SUPPLY HEAT REQUIREMENTS OF THE METHOD; REACTING THE NITROGEN COMPONENT OF THE WITHDRAWN HEATED AIR WITH AN INTRODUCED HYDROCARBON GAS TO FORM HCN; AND SEPARATING THE HCN FROM THE STREAM.
Claim 2
Independent Claim
111 words
THE METHOD OF PRODUCING NITROGEN COMPOUNDS COMPRISING CONTINUOUSLY PREHEATING A STREAM OF AIR BY CONTINUOUSLY PASSING THE AIR STREAM UPWARDLY THROUGH A DESCENDING STREAM OF HEATED SOLID INERT REFRACTORY MATERIAL IN THE LOWER CHAMBER OF A MOVING BED TYPE OF HEATER HAVING AN UPPER CHAMBER IN WHICH THE REFRACTORY MATERIAL IS HEATED; CONTINUOUSLY WITHDRAWING THE HEATED AIR FROM THE UPPER END OF THE LOWER CHAMBER; UTILIZING THE OXYGEN COMPONENT OF THE WITHDRAWN HEATED AIR TO SUPPORT COMBUSTION OF A FUEL TO SUPPLY HEAT REQUIREMENTS OF THE METHOD; REACTING THE NITROGEN COMPONENT OF THE WITHDRAWN HEATED AIR WITH AN INTRODUCED HYDROCARBON GAS TO FORM HCN; AND SEPARATING THE HCN FROM THE STREAM.
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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) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |