Compound for use as a mineral fibre binder and process for providing such
CA 2318273 C · Owner: Rockwool International A/S · Inventors: Husemoen, Thor; Stanssens, Dirk Armand Wim; Hansen, Erling Lennart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compound or salts thereof suitable for use as a binder for mineral fibres for , example glass or stone wool, said compound comprising: a carboxylic acid group, and/or, a .beta.-hydroxyalkyl amide group.
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 January 15, 1999 and granted October 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2021.
- 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.