Tri-nip papermaking system
CA 1180215 A · Owner: Crown Zellerbach Corporation · Inventors: Hostetler, Ronald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for producing a bulky soft and absorbent paper web, wherein the web is directed through a first nip formed by two dewatering felts, a second nip formed between a dewatering felt and an imprinting fabric of a specified character, and a third nip formed between the imprinting fabric and creping surface.
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 January 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2002.
- 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.