Patent Yard Sign in
Expired Canadian patentCanada

Process and apparatus for recovering oil components from a flow of dry-distilled gas of solid polymer waste

CA 1292964 C · Owner: Amamiya, Akira · Inventors: Amamiya, Akira; Michimae, Kiyoharu; Akimoto, Hiroshi

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

Apparatus for recovering the oil component from a flow of dry-distilled gases of solid polymer wastes. A bottom housing is separated from a main housing to provide a liquid sealing structure for sealing the space between the bottom housing and the main housing with the liquid. A baffle plural groups of cooling pipes and dust cleaning means are also used in the apparatus.

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 December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
  • 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 25, 1986
GrantedDecember 10, 1991
Term endedDecember 10, 2008
Patent numberCA 1292964 C
Classification (IPC)C10B53/00 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJune 25, 1986Patent grantedDec 10, 1991Term endedDec 10, 2008

Sources & verification

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