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US3741910A Expired / Lapsed US ⏱️ 0.0 years remaining

Catalyst for the production of acrylonitrile

Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1971-05-28
•
Granted: 1973-06-26
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Expires: 1991-05-28
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Abstract

Abstract IN THE PRODUCTION OF ACRYLONITRILE BY A VAPOR PHASE REACTION OF PROPYLENE, AMMONIA AND OXYGEN AT AN ELEVATED TEMPERATURE, A PROCESS WHICH COMPRISES CONTACTING PROPYLENE, AMMONIA AND OXYGEN WITH A CATALYST COMPOSITION COMPRISING A CATALYST SYSTEM OF THE FORMULA: TLAPBMOCFEDBIEMNFXGOH WHEREIN X REPRESENTS ONE OR MORE OF THE METALS, NI, MG AND CO AND A, B, C, D, E, F, G AND H REPRESENT, RESPECTIVELY, THE RELATIVE NUMBER OF ATOMS OF EACH COMPONENT, PROVIDED THAT, WHEN C IS 12, A IS 2 OR LESS, BUT NOT 0, B IS 0 5, E IS 0.1 TO 5, F IS NOT MORE THAN 15 BUT NOT 0, G IS 0 TO 15, F+G IS 2 TO 15, AND H IS DECIDED OR DETERMINED DEPENDING ON THE NUMBER OF THE OTHER ATOMS AND IS USUALLY FROM 38.3 TO 81.5.

Inventors

  • 👤 T Shiraishi
  • 👤 S Honmaru
  • 👤 H Ichihashi
  • 👤 S Kishiwada
  • 👤 S Shimizu
  • 👤 Y Nagaoka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 17:33
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8872; B01J23/8874; B01J23/8875; B01J23/8876; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; B01J27/192; C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52

Claims Analysis

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References Cited (Backward Citations)

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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) 1976-06-25 1976-12-25 1977-06-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-25 1980-12-25 1981-06-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-25 1984-12-25 1985-06-26 $7700.00 Window Closed / Lapsed

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