Patent Yard Sign in
Expired Canadian patentCanada

Process for selectively recovering metal chlorides from gaseous effluent

CA 1085584 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Kilgren, Arnold W.; Low, David N.; Porter, Robert W.

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

E.I. du Pont de Nemours and Company, (Kilgren A.W.; Low, D.N. and Porter R.W.), ABSTRACT OF THE DISCLOSURE Process for selectively recovering metal chlorides from a gaseous mixture of metal chlorides by contacting the gaseous mixture at a temperature above the condensation point of the mixture with at least one stream of liquid to cool all the mixture to below the freezing point of at least one metal chloride in the mixture, the average velocity of the mixture being at least the pneumatic conveyance velocity at the point of contact. This process provides for recovery of metal chlorides without plugging 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 September 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 11, 1977
GrantedSeptember 16, 1980
Term endedSeptember 16, 1997
Patent numberCA 1085584 A
Classification (IPC)C01B9/00 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedOct 11, 1977Patent grantedSep 16, 1980Term endedSep 16, 1997

Sources & verification

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