Multidensity liner/insulator
CA 2444639 C · Owner: Eigel, Daniel J. · Inventors: Block, Thomas T.; Eigel, Daniel J.; Tilton, Jeffrey A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liner/insulator includes a pad of fibrous material having a lofty acoustically insulating, portion and a relatively higher density skin along a first face thereof that may function as a, water barrier. The acoustical liner is a non-laminate made from polyester polyethylene, polypropylene, polyethylene terephthalate glass fibers, natural fibers and , any mixtures thereof. For certain applications the liner/insulator may incorporate a facing on one or even, two opposing faces thereof. A method of insulating a door including an exterior body panel, and an interior fascia panel as well as a door for a vehicle are also disclosed and claimed.
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 May 28, 2002 and granted March 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2024.
- 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.