| Janesko Oy Patent applications |
| Patent application number | Title | Published |
|---|
| 20110075141 | STRUCTURE OF MEASUREMENT WINDOW - A measurement window structure is disclosed for an optical process measurement device. The measurement window structure can include a measurement window made of an optical material and having a measurement surface that is arranged to be placed into a process solution, a sealing surface formed to a frame structure of the optical process measurement device and facing the process solution, the measurement window made of an optical material being arranged to press against the sealing surface, and an attaching device or mechanism for pressing the measurement window made of an optical material against the sealing surface and for attaching it to the frame structure. The sealing surface formed to the frame structure can be a rotationally symmetrical surface and the surface pressing against the sealing surface formed to the frame structure of the measurement window made of an optical material can be a rotationally symmetrical surface. | 03-31-2011 |
| 20100025374 | METHOD FOR MEASURING THE ACTIVE KOH CONCENTRATION IN A KOH ETCHING PROCESS - The invention relates to a method for in-line measuring the active KOH concentration in a KOH etching process in which process silicon hydroxide is produced by a reduction reaction according to the formula: 2K | 02-04-2010 |
| 20080227215 | Method and arrangement of measuring acidity for other chemical or physical property of a gas - A method and an arrangement of measuring acidity or other chemical or physical property of a gas. The invention comprises a membrane having optical indicator molecules bound to a microporous matrix arranged to be placed into contact with the gas to be measured, the optical indicator molecules changing their colour in response to the acidity or other chemical or physical property of the gas, a light source, and a detector. The light source is arranged to emit and direct light to the membrane, the light being transmitted through the membrane, whereby a part of the light is absorbed into the optical indicator molecules, and the rest of the light emitted is guided to the detector, where it is measured. | 09-18-2008 |
