Bicomponent glass and polymer fibers made by rotary process
CA 2246283 A1 · Owner: Owens Corning · Inventors: Pellegrin, Michael T.; Aubourg, Patrick F.; Houston, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for making bicomponent glass and polymer fibers molten glass (A, 90, 99) and molten polymer (B 92, 97, 98) are supplied to a rotating spinner (10, 72) having an orificed peripheral wall (32 66, 74). The molten glass and , molten polymer are centrifuged through the orifices (56 70, 84) as molten , bicomponent glass and polymer streams. Then the streams are cooled to make bicomponent glass and polymer fibers.
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 February 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2019.
- 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.