Contaminant free high purity liquid dispensing system
CA 1205784 A · Owner: Allied Corporation · Inventors: Williams, John J.; Baxter, Peter E.; Bobbin, Laurence D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus is provided for transferring into a dispenser reservoir free of contamination from a sealed bulk container, such as a bottle used in shipping high purity liquid, e.g. electronic chemicals. The dispenser is provided with an adapter to interlock on the bottle and thereafter to perforate the sealed opening in the bottle and allow transfer of the liquid without exposure to ambient contamination. The dispenser is provided with a check valve which halts the flow of liquid from the reservoir before the liquid supply is depleted to prevent air from being pulled into the system. The dispenser reservoir compartment is formed with a liquid accumulating bottom provided with the check valve at …
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
- Granted June 10, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 2003.
- 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.