Apparatus for dry processing a semiconductor wafer
CA 1286794 C · Owner: Palmer, David W. · Inventors: Palmer, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A method and apparatus of dry processing a semiconductor wafer including processes of vacuum baking and dry silylation provides a gaseous atmosphere of pressure up to 760 Torr against the surface of the wafer, one or more of the constituents of the gas being obtained from a liquid fluid source of the constituent including a metering device that controls flow of the liquid fluid from a remote reservoir and feeds it to a vaporizer that converts the fluid to a vapor gas at pressure up to 760 Torr and feeds the vapor gas at that pressure into a wafer processing chamber where the particular dry process involving the vapor gas is carried out on the wafer surface. In a …
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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
- Granted July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.