Polyolefin molding compound for long-term contact with extractive media
CA 1330675 C · Owner: Hoechst Aktiengesellschaft · Inventors: Pfahler, Gerhard; Lotzsch, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyolefin molding compound which exhibits an excellent, chemical stability in long-term contact with extractive media, contains as stabilizers a symmetrical triaryl phosphite and an ester of 3,3-bis-(3'-t-butyl-4'-hydroxyphenyl)-butanoic acid.
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 12, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2011.
- 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.