Low density fiber-reinforced plastic composites
CA 1259747 A · Owner: The Dow Chemical Company · Inventors: Yats, Larry D.; Shaw, Ken M.; Wessling, Ritchie A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fiber-reinforced synthetic resinous material composite having a continuous matrix of the resinous material and from 10 to 50 percent by weight of randomly oriented reinforcing fibers and a void volumn of from 20 to 90 percent of the total volumn of the composite, and a process for making a low density, high void volumn composite.
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 September 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 19, 2006.
- 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.