Enhanced electro-deposition device and method
CA 2420339 A1 · Owner: Pti Advanced Filtration, Inc. · Inventors: Hopkins, David H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Embodiments of the present invention relate to a membrane assembly useful in an electrodeposition coating system and a method for constructing such a membrane assembly. The membrane assembly may include a membrane sheet a guide , and a frame. In an embodiment of the invention the membrane assembly may be , formed in a tubular shape by ultrasonically welding a membrane sheet along a spiral seam and placing the membrane sheet between a guide and frame formed form extruded net tubing. Alternative embodiments of the invention may incorporate different seam shapes and manufacturing and joining methods.
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
- Filed August 1, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 1, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2023.
- 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.