Thermal recording sheet
CA 2095965 A1 · Owner: Nippon Paper Industries Co. Ltd. · Inventors: Ogino, Naomi; Minami, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intermediate layer containing polymeric fine particles having a cross-linking structure with a particle diameter of 0.2 to 5.0µm and an inorganic pigment having an oil absorption of less than 170 ml/100g in a ratio of 1:1 to 1:9 is provided between a substrate and a thermal color developing layer, thereby providing a thermal recording sheet having superior dot reproducibility and image quality with no sticking or adherence of residue.
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 May 11, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 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.