Method and apparatus for melt-blown fiber encapsulation
CA 2442391 A1 · Owner: Dong, Daojie · Inventors: Dong, Daojie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an insulation product comprising an elongated fibrous batt with at least a partial polymeric encapsulating layer formed by meltblowing or, melt spraying a polymeric composition onto one or more surfaces of the fibrous batt, and, optionally, a separate vapor retarding layer applied to one or more surfaces of the, fibrous batt and an apparatus for manufacturing such an insulation product.
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 September 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2025.
- 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.