Thermoplastic composition for the manufacture of medical apparatuses and instruments
CA 1114982 A · Owner: Hoechst Aktiengesellschaft · Inventors: Brandrup, Johannes; Fleischer, Dietrich; Sommer, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure: The invention relates to a thermoplastic composition for the manufacture of medical apparatuses and instruments which come into contact with parenteral liquids. This composition consists of from 50 to 99.5 parts by weight of a chlorinated polyolefin having a chlorine content of from 15 to 45 % by weight and an average molecular weight of from 30,000 to 300,000 and of from 0.5 to 50 parts by weight of polymers of acrylic and/or methacrylic acid esters. The receptacles prepared have a low permeability for gases and microorganisms. Their water vapor permeability is also low, but may be adjusted within definite limits.
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 December 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 1998.
- 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.