Liquid detergents containing proteolytic enzyme, peptide aldehyde and calcium ions
CA 2266527 A1 · Owner: Smith, Laurence Anthony · Inventors: Huber, Alan Carl; Mciver, John Mcmillan; Mckillop, Kirsten Louise
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous liquid detergent compositions are described which comprise a proteolytic enzyme wherein the proteolytic activity is reversibly inhibited by a peptide aldehyde and calcium. More specifically liquid detergent , compositions are disclosed which contain a detersive surfactant a proteolytic , enzyme, a peptide aldehyde and calcium ions. The combination of peptide aldehyde and calcium ions acts to provide synergistic protease inhibitor benefits.
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 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2019.
- 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.