Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7249502 | Precipitation/hail sensor and method for precipitation rate measurement | Atte Salmi, Jouni Ikonen, Jan Lönnqvist, Heikki Turtiainen | 2007-07-31 |
| 5918287 | Measurement device for measurement of the tensile stress in an optical fiber | Heikki Rajkkonen | 1999-06-29 |
| 5467944 | Detector for indicating ice formation on the wing of an aircraft | — | 1995-11-21 |
| 5359904 | Device and method for measuring the tension stress of an optic fiber or a corresponding wire | — | 1994-11-01 |
| 4906107 | Fibre-optic thermometer or temperature alarm device | — | 1990-03-06 |
| 4882499 | Fiber-optic detector for oils and solvents | Aarre Matilainen, Jarmo Viirto | 1989-11-21 |
| 4833928 | Method and apparatus for noncontacting tension measurement in a flat foil and especially in a paper web | Tapio Marttinen | 1989-05-30 |
| 4603979 | Procedure and means for measuring the internal friction of liquid substances | Aarre Matilainen | 1986-08-05 |
| 4551030 | Procedure and means for examining the surface quality of materials in solid state | Ari Lehto | 1985-11-05 |
| 4335613 | Apparatus for indicating the freezing of the surface of an asphalt road, paved runway, or the like | — | 1982-06-22 |