Pharmaceutical products with a content of dexpanthenol for topical applications
CA 2115279 C · Owner: Bellmann, Gunther · Inventors: Bellmann, Gunther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to sterile pharmaceutical products with a content of dexpanthenol for topical application and is characterized in that as a vehicle they contain polyacrylic acid in partially neutralized form with a molecular weight of between approximately 3 and 5 million, and optionally preservatives in chelating agents and that the pH value of the polyacrylic acid gel is adjusted to 6.8 ~ 0.2.
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 February 9, 1994 and granted September 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2016.
- 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.