Sanitary container and production process thereof
CA 2199305 C · Owner: Kawachi, Yasushi · Inventors: Sudo, Morihiro; Kawachi, Yasushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sanitary container is composed of a base container made of a cyclic olefin polymer or its hydrogenation product and an inorganic coating formed on a surface of said base container. The sanitary container can be produced by forming the inorganic coating on the surface of the base container by plasma CVD. The sanitary container according to the present invention is equipped with significantly-improved transmission resistance to oxygen and nitrogen owing to the provision of the inorganic coating. Concerning the transmission rate of light at 290-450 nm in wavelength the sanitary container according to the present invention can also meet the requirement for medical plastic containers.
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 March 6, 1997 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 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.