A tissue making apparatus
CA 2135212 C · Owner: Mitsubishi Heavy Industries, Ltd. · Inventors: Worcester, Brian J.; Skaugen, Borgeir
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tissue making apparatus (10) is disclosed for making tissue (T) from stock (S). The apparatus includes a former (12) for forming a web of wet tissue (W) from the stock (S). An air drying arrangement (14) is disposed immediately downstream relative to the former (12) for drying the web of wet tissue (W). Subsequently the tissue (T) is dried during passage thereof through a Yankee dryer (16) disposed downstream relative to the drying arrangement (14) the Yankee dryer (16) completing the drying of the tissue (T).
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 May 17, 1993 and granted April 8, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 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.