Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6195671 | Electronic computing apparatus having arithmetic processing function and arithmetic processing method | Matsutaka Ito | 2001-02-27 |
| 6142367 | Electronic device and method of displaying mathematical expressions including variables | Akiyoshi Satoh, Toshiro Oba | 2000-11-07 |
| 5519646 | Calculator with display of processing for mulas as processing progresses | Syuji Uemura, Yoshihiro Okuda, Syuuji Kaya, Toshiro Oba, Akiyoshi Satoh +2 more | 1996-05-21 |
| 5371694 | Scientific calculator | Hideyasu Koumo | 1994-12-06 |
| 5335193 | Scientific calculator with coordinate transformation and single line numeric value display | — | 1994-08-02 |
| 5285399 | Calculator with easily enterable constant calculation mode | Shinichi Nishiguchi | 1994-02-08 |
| 5253191 | Electronic computer capable of entering unary operator using prefix notation | Hideyasu Koumo | 1993-10-12 |
| 5249147 | Electronic apparatus provided with device of calculating complex numbers | Hideyasu Koumo | 1993-09-28 |
| 5241489 | Electronic computer with fraction and exponent display | Hideyasu Koumo, Noboru Akizuki | 1993-08-31 |
| 5155815 | Computer in which data home is changeable in any mode | Noboru Akizuki, Taizou Nishida | 1992-10-13 |
| 5136505 | Electronic translator apparatus for translating words or phrases and auxiliary information related to the words or phrases | Yoshimitsu Inamori, Hiroshi Takada, Masao Okumura, Toshiro Oba, Hiroshi Nittaya +4 more | 1992-08-04 |
| 5134577 | Computer with algebraic expression memory | — | 1992-07-28 |
| 5132924 | Electronic computer capable of repeatedly displaying the results of a quotient/remainder calculation | Noboru Akizuki | 1992-07-21 |
| 5109518 | Calculator with single-key cursor-left-shift clear function and single-key cursor-right-shift clear function | Noboru Akizuki | 1992-04-28 |
| 5079732 | Multi-functional electronic desk calculator | Hideyasu Koumo, Noboru Akizuki | 1992-01-07 |
| 5065359 | Desk top calculator with access sequence control system for various constants | Hideyasu Koumo | 1991-11-12 |