Pressure-sensitive adhesive tape employing moisture resistant adhesive
CA 1091990 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Heilmann, Steven M.; Bateson, George F.; Brown, Francis W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Normally tacky and pressure-sensitive adhesive tapes, labels, etc. which, after being adhered to dry fibrous webs, remain firmly attached when the web and adhesive are exposed to moist conditions. These performance characteristics, which are not found when conventional pressure-sensitive adhesives are used result, from employing acrylate-based copolymer adhesives made from specific monomers and having inherent viscosities related to the monomers employed.
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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- 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.