Method of applying a photosensitive resin to a substrate for use in papermaking
CA 2212144 C · Owner: Mcfarland, James Robert · Inventors: Powers, John Robert; Miller, James Daniel Ii; Trokhan, Paul Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention comprises a method for applying a curable resin such as a photosensitive resin, to a substrate such as a papermaker's dewatering felt. The method comprises the steps of providing a substrate; providing a curable liquid resin; providing a second material different from the curable liquid resin; applying the second material to the substrate to occupy at least some of the voids in the substrate intermediate the first and second surfaces of the substrate; applying the curable resin to the substrate; curing at least some of the resin to provide a resin layer on the substrate; and removing at least some of the second material from the substrate wherein at least some of the, second …
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 January 24, 1996 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2018.
- 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.