Tack cloth
CA 1305839 C · Owner: Schoonen, Anthony E. · Inventors: Lapalme, Richard; Schoonen, Anthony E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A tack cloth comprising a sheet of fibrous material to at least one major surface of which has been applied a pressure sensitive adhesive polymer having a peel strength less than about 1.9 lbs/inch, a shear resistance of at least about 10 hours and a loop tack value of from about 1.2 to about 2.0 lbs. Nonwoven fabrics especially those, whose constituent fibers have been rearranged by the application of fluid rearranging forces thereto and woven, fabrics such as gauze are preferred for use as fibrous sheet materials.
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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.