Patent Yard Sign in
Expired Canadian patentCanada

Acid agglomeration of refractory gel in polar organic diluent

CA 1256127 A · Owner: Phillips Petroleum Company · Inventors: Mcdaniel, Max P.; Pitzer, Emory 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

Fines are reduced in refractory materials by mixing the refractory material with an acid composition in a liquid polar organic compound and thereafter working the mixture until a decrease in volume occurs. The resulting product can be shaped and subjected to conventional finishing treatments. The resulting product exhibits reduced fines and thus is an improved material for use as a catalyst support. The resulting catalyst is of particular utility in the production of film grade ethylene polymer.

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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
  • 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 8, 1985
GrantedJune 20, 1989
Term endedJune 20, 2006
Patent numberCA 1256127 A
Classification (IPC)B01J2/30 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedOct 8, 1985Patent grantedJune 20, 1989Term endedJune 20, 2006

Sources & verification

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