Redispersion of noble metals on supported catalysts
CA 1135240 A · Owner: Exxon Research And Engineering Company · Inventors: Pine, Lloyd A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
U.S. 758,070, ABSTRACT OF THE DISCLOSURE Noble metals on supported zeolite containing hydrocarbon conversion catalysts which have been at least partially damaged by thermal and/or hydrothermal stresses resulting in a maldistribution of the supported metal are redispersed, to a highly active, high surface area state by contacting said catalyst with ethylenediaminetetraacetic acid (EDTA) or a salt thereof, to the point of, incipient wetness and then removing said acid by heat treatment.
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 November 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.