Emulsion binder for carpet and carpet tiles
CA 2026044 C · Owner: Lunsford, David · Inventors: Lunsford, David; Katz, Howard G.; Mudge, Paul R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Carpet coating compositions are disclosed which comprise 40 to 80 percent by weight filler and 20 to 60 percent by weight of a latex binder the binder comprising an emulsion polymer of a) 40 to 80% by weight of a vinyl ester of an alkomoic acid the acid, having from 1 to 13 carbon atoms; b) 5 to 25% by weight of a copolymerizable comonomer having a Tg of at least 50°C; and;, c) 10 to 30% ethylene.
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
- Filed September 24, 1990 and granted November 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2012.
- 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.