Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D554103 | Interphone | Masayuki Morikawa | 2007-10-30 |
| D553607 | Interphone | Shouheii Miyamoto | 2007-10-23 |
| D509820 | Interphone | Kazuya Yoshida | 2005-09-20 |
| D505127 | Interphone | Kazuya Yoshida | 2005-05-17 |
| D491551 | Interphone | Hiroshi Matsui | 2004-06-15 |
| D490396 | Interphone | Hidenori Yamaguchi | 2004-05-25 |
| D481698 | Interphone | Manabu Yamada | 2003-11-04 |
| D480702 | Interphone | Kazuya Yoshida | 2003-10-14 |
| D480377 | Interphone | Kazuya Yoshida | 2003-10-07 |
| D466883 | Interphone | Hiroshi Matsui | 2002-12-10 |
| D466882 | Interphone | Hiroshi Matsui | 2002-12-10 |
| D466491 | Interphone | Hiroshi Matsui | 2002-12-03 |
| D466099 | Interphone | Hiroshi Matsui | 2002-11-26 |
| D457866 | Interphone | Hiroshi Matsui | 2002-05-28 |
| D394653 | Intercom sub-station | Tetuaki Kato | 1998-05-26 |
| D394656 | Intercom master station | Tetuaki Kato | 1998-05-26 |