A method and measuring machine for analyzing a paper web
CA 2268909 C · Owner: Stora Kopparbergs Bergslags Ab · Inventors: Lind, Bengt (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a measuring machine for analyzing at least one property of a paper web (7). According to the invention a jumbo roll (5) from a paper machine is placed in a measuring machine and its paper web (7) is conveyed from an unreeling section (1) through, a measuring section (3) to a reeling section (2). A measuring sequence is performed which comprises stepwise feeding of the paper web and measuring the property in the measuring section when the paper web is , stationary, within a web-width measuring area which in the machine direction corresponds to said step length by scanning traversing a , measuring sensor. The values recorded are transmitted to a computer unit for processing …
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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 October 13, 1997 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 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.