Method of increasing the toughness of fiber-reinforced composites without loss of modulus
CA 1286971 C · Owner: Basf Corporation · Inventors: Thorfinnson, Bradley S.; Folda, Thomas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Inclusion of minor amounts of predominately amorphous silica microfibers into thermosetting matrix resins allow manufacture of prepregs which produce toughened composites resistant to impact damage without the loss of modulus normally asociated with toughened resin systems.
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
- Granted July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
- 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.