Packing
CA 2029303 C · Owner: Ueda, Takahisa · Inventors: Ueda, Takahisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to packing for hermetically sealing a member. The packing in accordance with the present invention comprises knitting yarns each of which includes a plurality of longitudinally arranged reinforcing fiber yarns and expanded graphite integrally bonded to at least one side of the reinforcing fiber. yarns with adhesives. The knitting yarns are provided with excellent sealing properties and strong tensile strength and toughness. A plurality of such knitting yarns may be put together to form a core member. The core member may be covered, at the outer periphery, with a braided body of the knitting yarns. A plurality of such knitting yarns may be braided …
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 November 5, 1990 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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.