Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11486840 | Electrical tomography for vertical profiling | Anssi Lehikoinen, Mika Mononen, Arto Voutilainen | 2022-11-01 |
| 10337978 | Method and apparatus for determining the location of an interface of interest, and computer program | Arto Voutilainen, Anssi Lehikoinen | 2019-07-02 |
| 10025018 | Arrangement and a method for coupling light into a plate-like light guide | Markku Kuittinen | 2018-07-17 |
| 9684108 | Arrangement and a method for coupling light into a plate-like light guide | Markku Kuittinen | 2017-06-20 |
| 8593734 | Beam expansion with three-dimensional diffractive elements | — | 2013-11-26 |
| 8146950 | Diffractive color system | Joni Orava, Jeroen Carelse | 2012-04-03 |
| 8092723 | Method of producing a diffraction grating element | Tapani Levola | 2012-01-10 |
| 7798699 | Layered light guide with diffractive structures | Pauli Laitinen, Max Lindfors, Lea Myyrylainen | 2010-09-21 |