Method of making a fibrous pack
CA 2309282 A1 · Owner: Loftus, James E. · Inventors: Zeng, Qingyu; Loftus, James E.; Pellegrin, Michael T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making a fibrous pack (36) includes centrifuging at least two sets of mineral fibers from molten material using at least two rotary mineral fiber spinners (12) that are arranged in a machine direction along a collection surface (14), directing each set of the mineral fibers into a downwardly moving veil (24) beneath one of the mineral fiber spinners (12) generating a , downwardly moving array (52) of aligned organic fibers from at least one orificed die (50) that is spaced apart from each of the mineral fiber spinners (12) and directing the array (52) into contact with the mineral fibers and , collecting the mineral fibers and organic fibers as a fibrous pack (36).
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 November 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2020.
- 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.