Non-fibrous composition
CA 1109985 A · Owner: Armstrong World Industries, Inc. · Inventors: Ehrhart, Wendell A.; Harris, Thomas G.; Mazzur, Richard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An improved surface covering composition is described. This composition comprises a chlorinated polyethylene having a chlorine content of between 35 and 48 weight percent a 100% modulus of at least, 250 to about 500 and an ultimate tensile strength of 1000-3500 psi; a polyalkylene arylate of the formula, ?OC(O)R-CO(O)R'?n wherein n is about 4 to about 200, R is the radical derived from C8 to C14 aromatic dicarboxylic acids and R' is the radical derived from the glycol selected from the group C2 to C8 linear aliphatic glycol C3 to, C8 branched aliphatic glycol or mixtures thereof; and a poly(vinyl chloride) resin.
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 September 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.