Unsaturated polyester resin composition having less coloration and excellent transparency
CA 1315908 C · Owner: Showa Denko Kabushikikaisha · Inventors: Kitayama, Mikito; Oda, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An unsaturated polyester resin composition suitable for an onyx-like artificial marble is obtained by using aluminum hydroxide having an average primary particle size of at least 20 µm or a mixture thereof with aluminum hydroxide pulverized from the above aluminum hydroxide and having an average particle size of at least 15 µm. This composition has an improved transparency a reduced, coloration, and a good productivity.
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 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
- 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.