Polypropylene injection molded articles
CA 1286435 C · Owner: Wakamatsu, Kazuki · Inventors: Wakamatsu, Kazuki; Tanaka, Shigeo; Tanaka, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polypropylene injection molded article is disclosed, which is obtained from a crystalline propylene polymer composition containing a polyrner of a vinylcycloalkane having 6 or more carbon atoms in an amount of from 0.05 wt ppm to 10,000 wt ppm calculated as a vinylcycloalkane unit. The article exhibits excellent transparency and high crystallinity.
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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2008.
- 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.