Process for hydrosonically area embossing thin thermoplastic film materials and products formed thereby
CA 2089927 A1 · Owner: Kimberly-Clark Corporation · Inventors: Jameson, Lee Kirby; Cohen, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to a method for forming embossed areas in a thin thermoplastic film material and the products formed thereby. The method includes the steps of (1) placing the thin thermoplastic film material on a pattern anvil having a pattern of raised areas wherein the height of the raised areas is generally less than the thickness of the film material; (2) conveying the thermoplastic film material while, placed on the pattern anvil, through an area where a liquid is applied to the film material; and (3) subjecting the thermoplastic film material to a sufficient amount of ultrasonic vibrations in the area where the liquid is applied to the film material to emboss the film …
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 February 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 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.