Resin calender roll
CA 1281568 C · Owner: Inoue, Akiyoshi · Inventors: Takaoka, Yasuhiro; Inoue, Akiyoshi; Saito, Yuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A calender roll according to this invention requires no pre-operation, and has excellent heat and pressure resistance. In addition, the roll generates only a small amount of heat upon rotation, and can prevent scattering of a resin upon breakage. The roll of this invention is suitable to a resin calender roll such as a papermaker's calender roll.
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 March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2008.
- 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.