Dyeing and flame retardant treatment for aramids
CA 1298685 C · Owner: Burlington Industries, Inc. · Inventors: Johnson, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Poly(m-phenyleneisophthalamide) fibers are simultaneously dyed and imparted with improved flame retardant properties with a flame retardant liquid in which a disperse or acid dye is dissolved. Fabrics thus dyed and flame retardant treated exhibit no afterglow when exposed to an open flame and a Limiting Oxygen Index greater than their undyed untreated, counterparts.
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 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
- 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.