Container caps
CA 1319129 C · Owner: W.R. Grace & Co.-Conn. · Inventors: Rossi-Mossuti, Massimo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Container Caps, Caps consisting of a closure panel 1 and a cylindrical side wall 4 that are relatively permeable to water vapour and/or oxygen are rendered less permeable by moulding into and permanently bonding to the inner face 3 or, more usually, the outer face 2 of the closure panel a relatively vapour impermeable lamina 5. The cap is made by a process in which a lamina is inserted into the cavity of a mould, usually an injection mould and then, the material for forming the cap is introduced into and mould in the cavity.
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 June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 2010.
- 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.