Adhesive compositions, wound dressings and methods
CA 2104046 C · Owner: Chen, Yen-Lane · Inventors: Chen, Yen-Lane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hydrocolloid adhesive compositions are disclosed comprising a hydrophobic unsaturated aliphatic homopolymer a compatible tackifier, and at, least one hydrocolloid absorbent. The compositions have enhanced resistance to breakdown by body fluids, adjustable absorbency improved adhesive and, cohesive properties as well as a reduced tendency to leave an adhesive residue after application. Also disclosed are wound dressings ostomy or prosthesis, adhesives, methods of using wound dressings and methods for forming the, hydrocolloid adhesive compositions.
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 13, 1993 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 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.