Dispatching apparatus with a gas supply distribution system for handling and storing pressurized sealable transportable containers
CA 2094437 C · Owner: International Business Machines Corporation · Inventors: Lafond, Andre; Garric, Georges
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The dispatching apparatus with a gas supply distribution system basically comprises an automatic handler 301 and a vertical stocker. The vertical stocker comprises a frame formed by an assembly of tubes sup porting a plurality of support stations or bins each provided with gas injector means connected on the one hand to the gas injection valve means of the container and on the other hand to a compressed ultra pure neutral gas supply installation. As a result during the processing idle times, an adequate overpressure of said neutral gas is maintained in the interior space of the container enclosing the workpiece, e.g. a silicon wafer. The automatic handler basically comprises a handling …
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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 April 20, 1993 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 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.