Porous materials having two different reaction surfaces
CA 1252002 A · Owner: Dow Corning Corporation · Inventors: Williams, Dwight E.; Revis, Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Porous materials having a dual surface are disclosed. Also disclosed is a method for their preparation. An example of such a material is a silica gel reacted with a reactive silane intermediate such as (CH3)2Si=O and then, with a reactive silane such as to give a dual treated material having -((CH3)2SiO)XH on the exterior surface and, on the interior surface of the pores.
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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 April 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 4, 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.
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.