Device and method for testing paving materials
CA 2525469 C · Owner: Kim, Sang-Soo · Inventors: Kim, Sang-Soo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and method for directly measuring the critical temperatures for thermal cracking of asphalt binders (10). The exemplary comprises a metal ring (12), a strain gauge (14) attached to the inner surface of the ring an , environmental chamber (60), one or more signal amplifiers (40) and a data , acquisition system (50) such as a laptop computer running suitable data analysis software. A mold (20) that is also a component of the present invention is used to create a circular asphalt binder test specimen (18). When properly cast the specimen (18) encircles the metal ring (12). The specimen (18) and ring (12) are placed within the environmental chamber (60) for analysis. Development …
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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 August 22, 2003 and granted July 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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.