Packaging of high power semiconductor lasers
CA 2128068 C · Owner: Bartholomew, Roger F. · Inventors: Hall, Douglas Warren; Jakobson, Paul Anthony; Bartholomew, Roger F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package for a high power semiconductor laser comprising a hermetically sealed container filled with a dry gaseous medium containing oxygen. The package also may include a getter for organic impurities e.g. a getter, composed of a porous silica or a zeolite. The hydrogen content of the materials used to form the package can be reduced by baking at an elevated temperature for an extended period of time, e.g. at 150°C for 200 hours.
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 July 14, 1994 and granted December 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2016.
- 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.