Toxic gas absorbent and process for making and using same
CA 1313522 C · Owner: Sorbent Technologies Corporation · Inventors: Nelson, Sidney G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Toxic Gas Absorbent and, Process for Making and Using Same Abstract, Solid sorbents (acceptors) for noxious components eg. SOx, NOx and HX, from gases below about 250° specifically water-containing acceptors that have a divalent metal oxide and/or hydroxide, eg. MgO and/or CaO, coated onto an exfoliated or expanded mineral support, are improved by heating them before use at a temperature of 400-650° for a conditioning period of at least a few minutes. So conditioned pulverulent MgO coated onto water-laden exfoliated vermiculite (alternatively expanded perlite) is preferred because of sorbing capacity and the ability of the magnesia-based acceptors to be regenerated at a moderately elevated …
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 February 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2010.
- 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.