Nanometer size antimony tin oxide (ato) particles comprising laser marking additive
CA 2544530 C · Owner: Carroll, James B. Jr. · Inventors: Jones, Steven A.; Carroll, James B. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Laser marking of plastic material is achieved by incorporating into the plastic a laser marking particulate additive having a particle size of less than 100 nm. A mixed oxide particle of tin and antimony having a particle size of 10-70 nm is useful as a laser marking additive when using a YAG laser. A metallic powder can further be added to improve marking contrast.
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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 4, 2004 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2024.
- 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.