Method and apparatus for manufacturing continuous fiber glass strand reinforcing mat
CA 2045108 C · Owner: Morfesis, Anastasia · Inventors: Reese, Walter J.; Salego, George T.; Morfesis, Anastasia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The subject matter of this invention relates to a method and apparatus for making mats of continuous glass fiber strands in which a heated calendering roll and continuous belt are used to compact the mat, expel excess moisture, melt, and/or cure resin previously distributed throughout the glass strand. The resin may be deposited in the mat in the form of a powdered resin or as a continuous thread of material that is combined with the remaining strands that form the mat as the glass strands are projected onto the surface of a moving conveyor to form the mat.
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 June 20, 1991 and granted July 22, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2013.
- 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.