Cool storage of cultured epithelial sheets
CA 2011111 C · Owner: Biosurface Technology, Inc. · Inventors: Schaeffer, Susan F.; Odessey, Richard; Schermer, Alexander
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The viability of cohesive sheets of cultured epithelial cells such as keratinocytes used as wound dressings is maintained or improved by storage at a temperature within the range of 8°-25°C preferably, 13°-23°C, for periods greater than 8 hours preferably up to 26 hours. This method and the resulting product permits a significant increase in the shipping radius of cultured dressings manufactured in a central facility, and increases flexibility in scheduling of shipments and surgical procedures.
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 28, 1990 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 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.