Injection molding compositions
CA 1104732 A · Owner: G A F Corporation · Inventors: Charles, John J.; Gasman, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Molding composition and molded products comprising polybutylene terephthalate containing thermally stable reinforcing fibers, such as glass fibers having an, aspect ratio of at least about 5 and between about 5 and, about 70 wt% based on total PBT composition of novaculite having an average particle size between about 3 and about 5 microns. In preferred embodiments the composition also includes amorphous thermally stable resins such as polymethyl methacrylate and poly(butylene terephthalate-cotetramethylene oxide).
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 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 1998.
- 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.