Print substrate
CA 2118112 A1 · Owner: Bergmann, Werner · Inventors: Dahling, Paul-Heinz; Bergmann, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A print substrate, in particular paper has a coat on one or both sides, which contains ungelatinized starch granules and kaolin as coating pigment and possibly one or more additional mineral pigments and binder and wherein the content of the starch granules is 2 to 25% by weight with respect to the total coating pigment; the binder proportion - with respect to the total pigment - is less than 12% by weight calculated as parts by weight when dry; the gloss of the coatafter calendering is greater than 40% as measured at an angle of 75° according to Lehmann; the mineral coating pigment comprises at least 60% by weight of kaolin and the mineral pigment component and starch granules make up the …
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 March 10, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2015.
- 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.