Pierceable closure member for vial
CA 1185562 A · Owner: Takeda Chemical Industries, Ltd. · Inventors: Matukura, Yoshiharu; Sudo, Denpei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pierceable closure member for use on a vacuumfilled vial comprises a rubber plug having an annular leg and an annular protrusion, and a lamina having an annular recess and secured to the rubber plug with the annular recess receiving therein the annular leg. For the purpose of retaining the vacuum inside the vial the annular, protrusion on the rubber plug has a specific dimensional relationship to the other parameter of the closure member
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 April 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2002.
- 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.