Method of altering growth and development and suppressing contamination by microorganisms in cell or tissue culture
CA 1215013 A · Owner: Quigley, Herbert J. Jr. · Inventors: Malette, William G.; Quigley, Herbert J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of altering growth and development and, suppressing contamination by microorganisms in cell or tissue culture is described and comprises the steps of: 1) differentially enhancing or supressing the growth and development of specific cells, 2) providing a non-protein matrix for three-dimensional tissue growth, and 3) preventing or suppressing contamination of microorganisms by placing chitosan or chitosan derivatives in contact with the cell culture. The chitosan employed in this method is 45 to 100% de-acetylated and has a molecular weight of 10,000 to 2,055,000.
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 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 2003.
- 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.