Apparatus for supplying cvd coating devices
CA 2106734 C · Owner: Bittner, Hans J. · Inventors: Bittner, Hans J.; Klein, Hans-Jurgen; Morsen, Ewald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus supplies CVD coating devices with coating gas and includes an intermediate reservoir for accommodation of the gaseous coating material arranged between a storage tank and a coating device. The volume of the reservoir is set to a predetermined, maximum pressure change in the intermediate reservoir upon withdrawal of the mass of gas required for a coating step. The intermediate reservoir can be connected to a gas recovery station.
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 September 22, 1993 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2015.
- 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.