Apparatus and methods for applying conformal coatings to electronic circuit boards
CA 2098784 A1 · Owner: Benecke, Jurgen · Inventors: Benecke, Jurgen; Cieplik, Arthur; Boger, Bentley
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and methods for producing intermittent, discrete patterns of coating material onto discrete irregular substrate areas such as, electronic circuit boards, where the patterns have sharp, square leading and trailing edges as well as, side edges. A slot nozzle die has elongated air slots along the slot extrusion opening. In the operation of the apparatus, the air flow is initiated from both air slots prior to the initiation of the coating material flow. Also, the air flow is continued beyond that point in time, when the coating material flow ceases. The delays between the operations of the air flow and the hot melt flow are on the order of micro seconds. Alternatively the lead and lag …
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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 June 18, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.