Process and device for making a product comprising a support including a prolonged effect adhesive and a protective band
CA 2035478 C · Owner: Chevalier, Jacques Paul · Inventors: Veniard, Gilbert Eugene; Chevalier, Jacques Paul; Chevalier, Pierre Andre Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The process is designed to manufacture a product consisting of a backing (20) with a long-lasting adhesive (2-10) and protection tape (15) for delayed use of the adhesive (2-10). The product may be characterized as follows. The backing (20) including one face (22) receiving the adhesive (2-10) exhibits irregularities. The adhesive (2) is heated to a temperature at which it becomes pasty at the limit of the liquid state and is conducted to at least one hole (4) over a plane (5) on which the backing (20) is placed. Flow is produced at the same time as relative movement between the backing (20) and the hole (4) so that the adhesive (2) is deposited on the backing (20) in at least one …
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 June 28, 1990 and granted November 17, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2012.
- 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.