Substitutes for concrete in posts
CA 2425078 A1 · Owner: Mulleady, John · Inventors: Mulleady, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method to use asphalt and other compounds which are resistant to the affects of frost as, an alternative to concrete, Commonly used to fill the core of posts which are cast in molds and the molds in which the posts are cast are left on the post to act as reinforcment.
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
- Filed March 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2025.
- 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.