Fibre product-manufacture
CA 1203056 A · Owner: Boliden Aktiebolag · Inventors: Ranhagen, Ernst G.R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to fibre products such as paper, cardboard, and board, and to the manufacture thereof which, products comprise part fibre and part mineral. The invention is characterized in that the mineral part of the product includes mica (muscovite, biotite) having a diameter of up to about 300 µm and, having a flakiness of 10-100.
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 April 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 2003.
- 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.