Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11305319 | Device and method for cleaning monocrystalline pulling apparatus | — | 2022-04-19 |
| 11198161 | Cleaning device for monocrystal pulling apparatus | — | 2021-12-14 |
| 10458044 | Method for cleaning exhaust passage for semiconductor crystal manufacturing device | — | 2019-10-29 |
| 10000863 | Method for cleaning single crystal pulling apparatus, cleaning tool for use therein, and method for manufacturing single crystal | — | 2018-06-19 |
| 9738992 | Apparatus for cleaning exhaust passage for semiconductor crystal manufacturing device | — | 2017-08-22 |
| 7303629 | Apparatus for pulling single crystal | — | 2007-12-04 |
| 6122486 | Transmission restricting device radio communication terminal equipment and transmission restricting system using these | Masahiko Tanaka | 2000-09-19 |
| 6023475 | Data packet transmission method and apparatus for practicing the same | Masahiko Tanaka | 2000-02-08 |
| 6011483 | Battery built-in wireless ID card unit and ID verification unit | Masahiko Tanaka | 2000-01-04 |
| 5920592 | Data transmitter-receiver | Masahiko Tanaka | 1999-07-06 |
| 5870666 | Radio channel estimation based on BER and RSSI | Masahiko Tanaka | 1999-02-09 |
| 5825761 | Radio communication equipment with transmission rate regulating function | Masahiko Tanaka | 1998-10-20 |