Endless coated abrasive article
CA 2074196 A1 · Owner: Pieper, Jon R. · Inventors: Heinn, Donald C.; Pieper, Jon R.; Boettcher, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to endless coated abrasive articles, in particular, coated abrasive belts having a splice made by means of radiation curable adhesives. The conventional method for making an endless coated abrasive article, i.e. a belt involves, the steps of cutting a coated abrasive sheet to the desired length, applying a splice adhesive over both cut ends of the side of the coated abrasive sheet not bearing abrasive, allowing the coated abrasive sheet to stand for a sufficient time to allow the solvent to flash off from the adhesive, abutting the two cut ends of the coated abrasive sheet to form a joint applying, a splice medium over the joint and solidifying the, splice adhesive. …
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 July 20, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2014.
- 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.