Water soluble non-immunogenic polyamide cross-linking agents
CA 2135880 A1 · Owner: Nelson, Deanna J. · Inventors: Nelson, Deanna J.; Hai, Ton T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to water-soluble nonimmunogenic polyamide cross-linking agents and their use to cross-link polymerize, decorate, and conjugate proteins polynucleotides and other, biological substrates to form substantially nonimmunogenic water-soluble products. The present invention also relates to proteins polynucleotides and other biological substrates which are cross-linked, conjugated, polymerized or decorated with water-soluble polyamides to form substantially nonimmunogenic products.
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 November 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2015.
- 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.