Thermoplastic material containing towel
CA 2064071 C · Owner: Absorbent Products, Inc. · Inventors: Pfeiffer, Gustov O.; Neogi, Amar N.; Iff, Ron H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Unfused core forming fibers indicated at (28), together with the, facing sheet (24) are carried by the belt (20) into a, thermobonder (22). The thermobonder (22) heats the fibers to a temperature above the melting point of at least one thermoplastic fiber material in the core. This heat fuses the core and also bonds the core to the facing sheet. At forming zone (54) the multilayered or , composite web is typically bonded or densified along at least a section of the eventual peripheral edge margin of an article to be formed. Typically, the entire eventual peripheral edge margin of the article is densified. In addition, field bonds are also formed within the eventual field of the article …
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, 1990 and granted April 12, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2012.
- 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.