Method of folding and handling a web of material in a continuous operation
CA 2249292 C · Owner: Taub, Stewart Lawrence · Inventors: Taub, Stewart Lawrence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of folding and handling a web of material in a continuous manufacturing operation is disclosed. The method can be used during the process of making disposable absorbent articles such as sanitary napkins and , the like which have side flaps (24). During the method a discontinuous , portion (or tab) defined by the distal edge (36) of the web of flap material is held stationary and the continuous portion (or continuous ribbon) of the web of flap material is folded.
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 March 13, 1997 and granted January 14, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2019.
- 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.