Patent Yard Sign in
Expired Canadian patentCanada

Coke-furnace block

CA 1206910 A · Owner: Krupp-Koppers G.M.B.H. · Inventors: Griego, Rudolf; Schuffler, Arnulf; Jakobi, Wilhelm

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Coke-furnace block particularly with regenerators divided into two parts, for firing with strong and/or weak gas is characterized by having lower furnaces with unequal widths in alternating sequence. Preferred embodiments include two adjacent lower furnaces together having the same width as two corresponding upper furnaces; having the center lines of the lower furnaces align plumb with the center lines of oven chambers situated above them; having the open chamber widths of two adjacent regenerators relate to each other within the limits 1:1 up to the ratio of amounts of gas to air passing therethrough during operation; having the cross-sections of gas and air channels in the furnace bottoms …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted July 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 1, 1982
GrantedJuly 2, 1986
Term endedJuly 2, 2003
Patent numberCA 1206910 A
Classification (IPC)C10B5/12

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedJune 1, 1982Patent grantedJuly 2, 1986Term endedJuly 2, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.