Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8387113 | Communication system, authentication method, information processing device, information processing method, and battery | Hidetoshi Shimada, Norio Fujimori, Keiichi Komaki, Keisuke Koide, Tsuyoshi Ookubo +3 more | 2013-02-26 |
| 5952713 | Non-contact type IC card | Jun Ohbuchi, Yasuhiro Murasawa | 1999-09-14 |
| 5898738 | Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card | Yoshishige Nagata | 1999-04-27 |
| 5671254 | Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card | Yoshishige Nagata | 1997-09-23 |
| 5664157 | Noncontact IC card interface unit and communication system using the interface unit | Koichi Hayamizu | 1997-09-02 |
| 5424527 | Signal receiving coil and non-contact type IC card using the same | — | 1995-06-13 |
| 5382778 | Non-contact IC card | Toshiyuki Matsubara | 1995-01-17 |
| 5367149 | IC card and method of checking personal identification number of the same | — | 1994-11-22 |
| 5337063 | Antenna circuit for non-contact IC card and method of manufacturing the same | — | 1994-08-09 |
| 5321240 | Non-contact IC card | — | 1994-06-14 |
| 5286962 | IC card for prevention of fraudulent use | Shuzo Fujioka | 1994-02-15 |
| 5220158 | Non-contact IC card and method of using the same | Shuzo Fujioka | 1993-06-15 |
| 5191192 | Non-contact type information card and communication system | Kazuo Asami | 1993-03-02 |
| 5182442 | Low power consumption non-contact integrated circuit card | — | 1993-01-26 |
| 5157247 | IC card | — | 1992-10-20 |
| 5056089 | Memory device | Shigeru Furuta, Atsuo Yamaguchi, Takesi Inoue, Toshiyuki Matsubara, Shuzo Fujioka | 1991-10-08 |
| 5047924 | Microcomputer | Shuzo Fujioka, Toshiyuki Matsubara, Atsuo Yamaguchi, Shigeru Furuta, Takesi Inoue | 1991-09-10 |
| 5036460 | Microprocessor having miswriting preventing function | Atsuo Yamaguchi, Shigeru Furuta, Takesi Inoue, Toshiyuki Matsubara, Shuzo Fujioka | 1991-07-30 |
| 5019970 | IC card | Atsuo Yamaguchi, Shigeru Furuta, Takesi Inoue, Toshiyuki Matsubara, Shuzo Fujioka | 1991-05-28 |
| 5016212 | IC card having system ROM selection inhibit | Atsuo Yamaguchi, Shigeru Furuta, Takesi Inoue, Shuzo Fujioka, Toshiyuki Matsubara | 1991-05-14 |
| 4992651 | IC card and method of recording data therein | — | 1991-02-12 |
| 4960982 | IC card with secure mass storage memory | — | 1990-10-02 |
| 4930129 | IC card having internal error checking capability | — | 1990-05-29 |
| 4924465 | Memory with function test of error detection/correction device | Toshiyuki Matsubara, Shuzo Fujioka, Atsuo Yamaguchi, Shigeru Furuta, Takesi Inoue | 1990-05-08 |
| 4912308 | Device and method for effecting personal identification utilizing an IC card | — | 1990-03-27 |