Patterned heat welding rod for seaming resilient flooring
CA 2102847 C · Owner: Armstrong World Industries, Inc. · Inventors: Buckwalter, Michael E.; Ringer, Richard M.; Quinn, Edwin J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vinyl heat welding rod for seam sealing vinyl resilient flooring, whether in sheet or tile form is used to obtain, a monolithic appearing surface. This rod is specifically made to duplicate the appearance of the flooring material. For a chip-image flooring structure a sheet of multicolored, chips having a similar but different formulation from that, of the flooring material is prepared and the sheet is cut into suitable strips, heat pressed in a rod mold end, adhered or further molded to form the desired length and, used as a vinyl heat welding rod for sealing seams in flooring. Thus, the chip pattern is evident in the seam area and does not appear different when compared to the adjacent …
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 November 10, 1993 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2015.
- 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.