Automatic check of the hydrophilicity of a solid surface using infrared spectroscopy
CA 2353600 A1 · Owner: Henkel Kommanditgesellschaft Auf Aktien · Inventors: Bartik-Himmler, Ibolya; Thunchen, Andreas; Rose, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for controlling the hydrophilicity of a solid surface after a hydrophilizing treatment. According to said method the , surface is wetted with water, irradiated with infrared light the intensity of , the infrared light reflected by the surface is measured at a predetermined wavelength or at several predetermined wavelengths and the intensity measured is used to determine the median occupation with water of the surface. The method can be used, for example, for automatically controlling the effect of a purification process or a hydrophilizing treatment of plastics. If the results detected are insufficient, preferably alarm messages are output and/or …
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 October 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 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.