Pharmaceutical elastomeric coating
CA 1330640 C · Owner: West Company (The) · Inventors: Romberg, Val G.; Kiang, Patty H.; Curry, Wayne T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closure for use with a container with pharmaceutically pure contentstherein. The elastomeric closure has an elastomeric base and a continuous polyparaxylylene coating on the base. The coating ranges from about 0. microns to about 2.0 microns In thickness. The closure member has a coefficient of friction of 1.0 or less than 1.0 and is capable of substantially preventing metal extraction from said elastomers.
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
- Granted July 12, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2011.
- 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.