Halogen-free low-flammability films
CA 1160391 A · Owner: Bayer Aktiengesellschaft · Inventors: Wank, Joachim; Schmidt, Manfred; Reese, Eckart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo-2175, LeA 20,151, HALOGEN-FREE LOW-FLAMMABILITY FILMS ABSTRACT OF THE DISCLOSURE, The invention is directed to compositions comprising halogen-free aromatic polycarbonates and halogen-free aromatic polyphosphonates suitable for producing films of improved flame resistance and to processes for their preparation. LeA 20,151
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 January 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 2001.
- 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.