Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998431 | Field usable calibrator for humidity meters | Kalervo A. Jappinen, Marja-Riitta Hakala, Ari Lehto | 1991-03-12 |
| 4924064 | Method for trimming a planar capacitor | Lars Stormbom, Heikki Mesiä, Ari Lehto, Pekka Belt | 1990-05-08 |
| 4500940 | Capacitive humidity sensor and method for the manufacture of same | Heikki Kuisma, Ari Lehto | 1985-02-19 |