Method for producing a variable density, corrugated resin-bonded or thermo-bonded fiberfill and the structure produced thereby
CA 2184836 C · Owner: Shinih Enterprise Co. Ltd. · Inventors: Chien, Jung-Fu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A corrugated fiberfill structure is provided including at least one fibrous web folded to form a plurality of pleats having alternating crests and bases each of the pleats having a pair of legs in which each of the legs has a first leg surface and a second leg surface the first leg surface of one leg being in intimate contact with the first leg surface of an adjoining leg of the pleat and the second leg surface of the one leg being in intimate contact with the second leg surface of one adjoining leg of an adjacent pleat over a portion of each leg. At least some crests define a first structural surface and at least some bases define a second structural surface with the distance, between the …
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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 September 4, 1996 and granted March 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2018.
- 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.