Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10222287 | Cold cathode ionization gauge and cold cathode ionization gauge cartridge | Yohsuke Kawasaki, Itaru Enomoto | 2019-03-05 |
| 7446757 | Foldable display, input device provided with the display and foldable keyboard, and personal computer provided with the input device | Takeyuki Takagi | 2008-11-04 |
| 7196692 | Input device provided with windable display and foldable keyboard, and personal computer provided with the input device | Takeyuki Takagi | 2007-03-27 |
| 6991389 | Foldable keyboard | Takeyuki Takagi | 2006-01-31 |
| 6920039 | Foldable keyboard | Takeyuki Takagi | 2005-07-19 |
| 6812420 | Key switch operating mechanism assembly for electronic portable device | Mitsumasa Kako | 2004-11-02 |
| 6812421 | Key switch device, keyboard with the key switch device, and electronic device with the keyboard | Hirofumi Sato | 2004-11-02 |
| 6753793 | Key switch device, keyboard and electronic apparatus with key switch | Mitsumasa Kako | 2004-06-22 |
| 6586695 | Electronic apparatus including keyboard with key switch device | Hirofumi Sato | 2003-07-01 |
| 6538641 | Key switch device, keyboard with the key switch device, and electronic apparatus with the keyboard | — | 2003-03-25 |
| 6455794 | Key switch device, keyboard with the key switch device, and electronic apparatus with the keyboard | Hirofumi Sato | 2002-09-24 |
| 6417470 | Key top guided by scissors linkage located in mounting member with chipped configuration disposed on support plate | Mitsumasa Kako | 2002-07-09 |
| 6371050 | Pet animal body waste treating material | — | 2002-04-16 |
| 6371671 | Key switch device, keyboard with the key switch device, and electronic apparatus with the keyboard | Hirofumi Sato | 2002-04-16 |
| 6288457 | Key switch device and portable key electronic device provided with the key switch device | Mitsumasa Kako | 2001-09-11 |
| 6072133 | Elongated key support mechanism | Takeyuki Takagi | 2000-06-06 |
| 5844546 | Keyboard with cursor control | — | 1998-12-01 |
| 5833050 | Keyswitch device | Takeyuki Takagi | 1998-11-10 |
| 5735390 | Keyswitch device | Takeyuki Takagi | 1998-04-07 |
| 5562203 | Keyswitch | — | 1996-10-08 |
| 5512719 | Key switch having elastic portions for facilitating attachment of scissors-type support linkage to keytop and holder, and removal of keytop from linkage | Hiroaki Okada, Takeyuki Takagi | 1996-04-30 |
| 5504283 | Key switch device | Mitsumasa Kako, Takeyuki Takagi | 1996-04-02 |
| 5466901 | Keyswitch assembly having mechanism for controlling touch of keys | — | 1995-11-14 |
| 5463195 | Key switch | Makoto Watanabe, Yoshitsugu Sato, Takeyuki Takagi, Hiroaki Okada | 1995-10-31 |
| 5399822 | Keyswitch device | Yoshitsugu Sato, Makoto Watanabe | 1995-03-21 |