Environmentally friendly polylactide-based composite formulations
CA 2427012 C · Owner: Board Of Trustees Of Michigan State University · Inventors: Misra, Manjusri; Mohanty, Amar K.; Rook, Brian P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials and processes for preparing the polymeric materials are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride polyethylene glycol, polyglycolide, ethylene vinyl acetate polycarbonate, polycaprolactone, polyhydroxyalkanoates or polyolefins modified with polar groups for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable …
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 April 28, 2003 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 28, 2025.
- 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.