Composite building materials from recyclable waste
CA 2262634 C · Owner: Rutgers, The State University Of New Jersey · Inventors: Nosker, Thomas Jerome; Renfree, Richard William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite building material is disclosed produced from recycled materials. The composite building material is composed of an extruded mixture of high density polyethylene and a thermoplastic coated fiber material such as fiberglass. The resulting material has increased strength and is useful in high stress applications such as railroad ties.
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 August 28, 1997 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 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.