Agent for the removal of nucleic acids and/or endotoxin and method for the removal thereof
CA 1291594 C · Owner: Kurita Water Industries Ltd. · Inventors: Kawachi, Toru; Hashimoto, Masanori; Yamamoto, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Agent for the removal of nucleic acids and/or endotoxin from a liquid containing the nucleic acids and/or endotoxin and further useful substances (e.g. proteins hormones, etc.), which comprises as an active ingredient a chitosan having a low molecular weight particularly that, having an intrinsic viscosity of 0.01 to 5 (dl/g) and further a colloid equivalent of not less than 2 meq/g of evaporated residue.
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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2008.
- 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.