Topical antibacterial preparation
CA 2135139 A1 · Owner: Shoshan, Shmuel · Inventors: Marcos, David; Shoshan, Shmuel
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 a topical antibacterial preparation for the treatment of infected hands and for the advancement of their healing. The preparation comprises silver sulfadiazine (SSD) and collagen in, which the ratio of W/W of collagen to SSD ranges from 4 parts collagen to 1 part SSD, to 200 parts collagen to 1 part SSD. The concentration of the SSD is preferably 0.5% to 2.5%, advantageously 1%. The collagen is advantageously native collagen which may, be acid soluble or insoluble or mixtures thereof. The preparation may comprise an inert excipient e.g. SiO2, or blood plasma components, peptides carbo-, hydrates.
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 4, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2016.
- 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.