Spackling composition containing polyaramid fibers and ceramic microparticles, and methods of repair and attachment
CA 2525925 C · Owner: Bonifas, Andrew P. · Inventors: Bonifas, Andrew P.; Foster, Van R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spackling compound is provided that is easy to apply smoothly can be applied in thicker layers than known spackling without cracking upon drying and can be modified after drying without pitting flaking, or crumbling, particularly at the edges of the applied spackling patch. The composition includes polyaramid fibers that act as structural strengtheners to provide the dried composition with exceptional strength and resistance to cracking. In a second embodiment the composition further includes low aspect ratio (about equal to 1) ceramic microparticles that fill voids in the mixture to produce a smoother more dense composition. Upon drying, the ceramic microparticles produce a very smooth …
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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
- Filed November 8, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.