Thick belt and device for producing the same
CA 2129362 C · Owner: Kikuchi Web Tech Co. Ltd. · Inventors: Kikuchi, Koichi; Watanabe, Masao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To provide a very thick narrow belt of fabric having an excellent breakage strength per unit width exceeding the level of the strength of the fabric which can be conventionally obtained. A thick belt 1 comprising more than four layers of, weave structure in which outer two layers 2, 3 are woven to be a hollow tube by a common weft 41 and the remaining inner layers 5, 6 are woven by another weft 42 characterized in that a thickness of the belt in the widthwise central area is larger than a quarter of the belt width.
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 December 15, 1992 and granted April 28, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2014.
- 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.