Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6031825 | Infrared audio link in mobile phone | Terho Kaikuranta, Markku Lipponen, Seppo Järvensivu | 2000-02-29 |
| 5636264 | Radio telephone system which utilizes an infrared signal communication link | Mikko Terho, Jari Hamalainen | 1997-06-03 |