Method and kit for removing aldehyde-based stains
CA 2391920 A1 · Owner: Feldman, Les · Inventors: Feldman, Les; Hui, Henry; Zhu, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and kit are disclosed for removing or alleviating the severity or intensity of stains from aldehyde-based sterilizing solutions through the use of reducing, agents. This invention is effective even for porous surfaces such as filter paper and, porous nylon films as well as for smooth surfaces such as glass aluminum, copper, brass, and stainless steel. Also the invention may be used in a variety of formats such as a kit, useful for making or using solutions or gels to treat the aldehyde-based stained surfaces, of, for example, medical devices hospital bench or table tops, hospital floors and skin (if, in appropriate pH range) etc.
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 June 27, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2024.
- 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.