Rubber-based protective adhesive wrap for tubular metal articles
CA 1301616 C · Owner: Kendall Company (The) · Inventors: Huddleston, Elwyn G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel system for providing anti-corrosion protective coatings, e.g. for metal pipes and the like comprising: (1) a, rubber-based primer coating mixture; and (2) an adhesive tape comprising a backing carrying a rubber-based adhesive coating comprising a mixture of pre-crosslinked butyl rubber and virgin rubber alone or in combination with reclaimed rubber or a, mixture of virgin rubber and/or halogenated butyl rubber alone or in combination with reclaimed rubber, the virgin and/or halogenated butyl rubber being partially crosslinked by a phenolic resin crosslinking agent, the system further including a crosslinking agent and a crosslinking activator adapted to provide an in situ crosslinking …
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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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.