Patent US737077A successfully refreshed from Google Patents.
Patent US2937070A successfully refreshed from Google Patents.
Patent FR417191A successfully refreshed from Google Patents.
US3372986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing hydrocyanic acid and acrylonitrile from acrolein-cyanohydrin
Assignee: Knapsack AG
•
Filing: 1963-08-29
•
Granted: 1968-03-12
•
Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Sennewald Kurt
- 👤 Vogt Wilhelm
- 👤 Gehrmann Klaus
- 👤 Ohorodnik Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:05
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0208; C01C3/0245; C07; C07C; C07C253/00; C07C253/24; C07C253/26; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR PRODUCING ACRYLONITRILE AND HYDROCYANIC ACID COMPRISING CONTACTING ACROLEIN-CYANOHYDRIN REACTANT WITH REACTIVE AMOUNTS OF AMMONIA AND AT LEAST ONE SUBSTANCE SELECTED FROM OXYGEN AND AIR AND EFFECTING THE REACTION AT A TEMPERATURE OF ABOUT 300-550*C. IN THE PRESENCE OF A CATALYST CONSISTING SUBSTANTIALLY OF AT LEAST ONE OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF BARIUM, RHENIUM, RHODIUM, PALLADIUM, ANTIMONEY, ALUMINUM, THORIUM, MOLYBDENUM, VANADIUM, TIN, CHROMIUM, TUNGSTEN, COBALT, IRON, MANGANESE, NICKEL, COPPER, BISMUTH, TITANIUM, ZINC, CADMIUM, SILVER, GOLD, LEAD, NIOBIUM, TANTALUM, URANIUM, CERIUM AND PHOSPHORUS.
Claim 2
Dependent Claim
89 words
A PROCESS FOR PRODUCING ACRYLONITRILE AND HYDROCYANIC ACID COMPRISING CONTACTING ACROLEIN-CYANOHYDRIN REACTANT WITH REACTIVE AMOUNTS OF AMMONIA AND AT LEAST ONE SUBSTANCE SELECTED FROM OXYGEN AND AIR AND EFFECTING THE REACTION AT A TEMPERATURE OF ABOUT 300-550*C. IN THE PRESENCE OF A CATALYST CONSISTING SUBSTANTIALLY OF AT LEAST ONE OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF BARIUM, RHENIUM, RHODIUM, PALLADIUM, ANTIMONEY, ALUMINUM, THORIUM, MOLYBDENUM, VANADIUM, TIN, CHROMIUM, TUNGSTEN, COBALT, IRON, MANGANESE, NICKEL, COPPER, BISMUTH, TITANIUM, ZINC, CADMIUM, SILVER, GOLD, LEAD, NIOBIUM, TANTALUM, URANIUM, CERIUM AND PHOSPHORUS.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |