Method of internally coating steel drums
CA 1108019 A · Owner: Kaiser Steel Corporation · Inventors: Oswald, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title of the Invention, METHOD OF INTERNALLY COATING STEEL DRUMS Abstract of the Disclosure, Drum shells lids and filling hole covers, prior, to the assembly of these parts to make steel drums are, pre-treated by spraying with an alkaline solution iron, phosphate and thereafter with a standard rust inhibitor and the interiors of the drum parts are coated by electrostatic spray application with a thermosetting epoxy-based powder to a critical thickness which eliminates subsequent cracking and subsequent vulnerability to destructive substances such as tomato paste and other more corrosive chemicals. The drum parts are preheated prior to the application of the powder to accelerate the fusion …
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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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
- 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.