Topical treatment of blepharitis
CA 2089657 C · Owner: Martin, Neil F. · Inventors: Martin, Neil F.; Robinson, Howard N.; Martin, Neil F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of the invention is to provide a method and composition for treating blepharitis or blepharoconjunctivitis which comprises topical administration of a nitroimidazole compound e.g. , metronidazole in a suitable ophthalmic carrier directly to affected ocular tissues. The carrier can be based on an artificial tear solution, an ointment, a water soluble gel a nonaqueous carrier, or an eyelash shampoo.
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 17, 1990 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2012.
- 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.