Silicone water base fire barriers
CA 1285342 C · Owner: Dow Corning Corporation · Inventors: Harper, Jack R.; Dietlein, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract An aqueous silicone emulsion useful in forming a fire barrier consists essentially of a mixture of anionically stabilized silicone emulsion, expanded vermiculite and fiber, selected from the group consisting of ceramic fiber and aramid fiber. The trowelable composition is applied to fill cracks or openings in fire walls to seal the wall and then allowed to dry. The dried material seals the opening it occupies. Upon exposure to fire, the dried material forms a char on its surface which protects the material under the surface and maintains a seal in the wall.
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 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
- 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.