Sterilizing with hydrogen peroxide and plasma
CA 2042284 A1 · Owner: Campbell, Bryant A. · Inventors: Caputo, Ross A.; Campbell, Bryant A.; Moulton, Kern A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for plasma sterilization comprising exposing an article to be sterilized to pretreatment with hydrogen peroxide, and optionally a peracid antimicrobial agent, and to a plasma generated from gases. The gases can be selected from the group consisting essentially of argon, helium, nitrogen oxygen, hydrogen, and mixtures thereof; and the exposure to the plasma can be carried out at a pressure of from 0.1 to 10 torr and a chamber temperature of less than 80°C. The peracid antimicrobial agent can be a member selected from the group consisting of saturated and unsaturated peralkanoic acids having from 1 to 8 carbon atoms and halogenated derivatives thereof and is preferably peracetic …
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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 May 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2013.
- 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.