Method and apparatus for attaching fibrous batt to plastic substrate
CA 2317797 A1 · Owner: Bearman, John A. · Inventors: Hoeksema, Bret A.; Bearman, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved, economical, high speed method and apparatus for attaching a fibrous material to a plastic substrate involves positioning a fibrous material over a, surface of a plastic substrate directing a stream of heated air through the fibrous, material and at the surface of the plastic substrate to melt the surface of the plastic, substrate, compressing the fibrous material against the melted surface of the plastic, substrate, and allowing the melted surface of the plastic substrate to cool and resolidify, whereby fibers of the fibrous material become embedded in the resolidified plastic. The, apparatus generally comprises a fixture for supporting the plastic substrate and a …
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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 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2022.
- 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.