Method and apparatus for detecting moisture in a moving paper web
CA 2296772 A1 · Owner: Bullerwell, Arthur Charles · Inventors: Sitar, Kenneth K.; Bullerwell, Arthur Charles; Paletta, Joseph Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method far measuring the moisture in a web of paper stock comprises the steps of: positioning a first transmission probe having an open end, adjacent the web of paper stock; generating a plurality of electrical pulses with a, pulse-generating source; sequentially transmitting the electrical pulses from the, pulse-generating source to the open end of the transmission probe wherein , each of, the pulses reflects from the open end to the pulse-generating source; detecting the, duration of each of the pulses after reflection of the pulse from the open end of the, probe; and correlating the duration of each pulse to the moisture content of the web, of paper stock. With these steps the …
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 August 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2021.
- 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.