Device for the delivery of substances, process for the production thereof and use thereof
CA 1333688 C · Owner: Hoffmann, Hans-Rainer · Inventors: Jaeger, Halvor; Hoffmann, Hans-Rainer; Klein, Robert-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for the release or delivery of substances in a uniform or irregular distribution from hot melt pressure-sensitive adhesives is disclosed. The hot melt pressure-sensitive adhesive may have a processing temperature between about 40 and 80°C, preferably between about 40 and 60°C and most preferably between about 40 and 55°C. The inventive device may be applied in human and veterinary medicine, for diagnostic purposes or for use with cosmetics. A process for the production of the device is also disclosed.
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
- Granted December 27, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2011.
- 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.