Expired Canadian patentCanada
A new class of surfactant-like materials
CA 2578356 C · Owner: Boehringer Ingelheim Pharmaceuticals, Inc. · Inventors: Li, Jinjiang; Gereg, George W.; Corson, Mariotte
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention generally refers to a novel class of surfactant-like material comprising vitamin E TPGS and a water soluble polymer that promotes the solubility of poorly soluble compounds.
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 September 16, 2005 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 16, 2005
GrantedMay 28, 2013
Term endedSeptember 16, 2025
Patent numberCA 2578356 C
Classification (IPC)B01F17/44 +1 more
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.