Thermosetting covering sheet and a method of forming hard coating on the surface of substrates using the same
CA 1338677 C · Owner: Sekisui Kagaku Kogyo Kabushiki Kaisha · Inventors: Miyake, Akitaka; Aoto, Shunro; Oshikawa, Yosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermosetting covering sheet comprising an unhardened or semihardened layer made of a thermosetting resin composition is provided. The thermosetting resin composition comprises, as main ingredients, a reactive acrylic resin, which is in a solid state at ordinary temperatures, and a blocked isocyanate, the reactive acrylic resin containing a plurality of at least one kind of functional group selected from the group consisting of hydroxyl amino, and carboxyl, and the weight average molecular weight of the reactive acrylic resin being in the range of 100,000 to 1,000,000.
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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 October 22, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2013.
- 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.