US2831752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of hydrogen cyanide with a combination catalyst body employing gauze and granular material
Assignee: EIDP Inc
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Filing: 1954-09-17
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Granted: 1958-04-22
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Expires: 1974-09-17
Abstract
No abstract record available.
Inventors
- 👤 George W Luckey
- 👤 James M Robinett
- 👤 Alvin B Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:59
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0208; C01C3/0212; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/46; B01J23/464
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE PROCESS FOR SYNTHESIZING HYDROGEN CYANIDE COMPRISING FORMING A GASEOUS MIXTURE OF AMMONIA, NATURAL GAS, AND AIR, PASSING SAID MIXTURE THROUGH A FIXED CATALYST BED, MAINTAINED AT A HIGH TEMPERATURE AND COMPRISING AT LEAST ONE METALLIC GAUZE FORMING AN OVERLAYER COVERING THE UPSTREAM SURFACE OF A BED OF GRANULAR REFRACTORY MATERIAL, EACH GRANULE OF WHICH IS COVERED WITH A CONTINUOUS METALLIC COATING, THE METAL IN SAID GAUZE AND SAID COATING COMPRISING AT LEAST 50% BY WEIGHT OF PLATINUM, SAID PROCESS BEING FURTHER CHARACTERIZED IN THAT THE CONVERSION OF AMMONIA TO HYDROGEN CYANIDE IS GREATER THAN 60% OVER A PERIOD OF AT LEAST 60 DAYS OF CONTINUOUS OPERATION.
Claim 2
Dependent Claim
107 words
THE PROCESS FOR SYNTHESIZING HYDROGEN CYANIDE COMPRISING FORMING A GASEOUS MIXTURE OF AMMONIA, NATURAL GAS, AND AIR, PASSING SAID MIXTURE THROUGH A FIXED CATALYST BED, MAINTAINED AT A HIGH TEMPERATURE AND COMPRISING AT LEAST ONE METALLIC GAUZE FORMING AN OVERLAYER COVERING THE UPSTREAM SURFACE OF A BED OF GRANULAR REFRACTORY MATERIAL, EACH GRANULE OF WHICH IS COVERED WITH A CONTINUOUS METALLIC COATING, THE METAL IN SAID GAUZE AND SAID COATING COMPRISING AT LEAST 50% BY WEIGHT OF PLATINUM, SAID PROCESS BEING FURTHER CHARACTERIZED IN THAT THE CONVERSION OF AMMONIA TO HYDROGEN CYANIDE IS GREATER THAN 60% OVER A PERIOD OF AT LEAST 60 DAYS OF CONTINUOUS OPERATION.
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |