High-polymeric materials which can be inscribed by laser light
CA 2017545 C · Owner: Bartz, Wilfried · Inventors: Herkt-Maetzky, Christian; Schuler, Ralf; Bartz, Wilfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are moulding compounds, semi-finished products and finished articles of high-polymeric. material which can be inscribed by means of laser light. Such products were previously subject to restrictions with respect to their processing and their properties. The novel moulding compounds and semi-finished products and finished articles produced from them are able to be inscribed with laser light but are, not subject to any such restrictions. The products are capable of being adjusted to any desired colour. The novel products contain an additive which is virtually colourless in the visible spectral range and produces a marking with high colour contrast in the visible spectral range under …
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 May 25, 1990 and granted September 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2012.
- 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.