Issued Patents All Time
Showing 51–75 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5742558 | Semiconductor memory device for plurality of ranges of power supply voltage | — | 1998-04-21 |
| 5717640 | ROM type semiconductor memory device with large operating margin | — | 1998-02-10 |
| 5671260 | Digital processing apparatus using two synchronization signals | Eiji Yamauchi, Hidemi Oka, Takao Kashiro, Iwao Hidaka, Yoshiki Yamamoto | 1997-09-23 |
| 5668752 | Multi-stage ROM wherein a cell current of a selected memory cell is compared with a plurality of constant currents when driven to read voltages | — | 1997-09-16 |
| 5582964 | Photographic material having a syndiotactic styrenic polymer containing support | Akira Hatakeyama | 1996-12-10 |
| 5555217 | Semiconductor memory device having presetting function sense amplifier | — | 1996-09-10 |
| 5530671 | Semiconductor memory device having presetting function of sense amplifier | — | 1996-06-25 |
| 5513193 | Non-volatile semiconductor memory device capable of checking the threshold value of memory cells | — | 1996-04-30 |
| 5490181 | Timing recovering apparatus having window periods determined by period of clock signal | Masafumi Shimotashiro, Yoshio Higashida, Koichi Hayashi | 1996-02-06 |
| 5472831 | Silver halide photographic material | Yosuke Nishiura, Yukio Shinagawa, Junichi Yamanouchi, Yasuo Mukunoki | 1995-12-05 |
| 5430682 | Semiconductor integrated circuit device having internal step-down power voltage generator with auxiliary current path for keeping step-down power voltage constant | Kimiyasu Ishikawa | 1995-07-04 |
| 5408433 | Nonvolatile semiconductor memory device | — | 1995-04-18 |
| 5392236 | Semiconductor memory device | — | 1995-02-21 |
| 5363340 | Semiconductor memory | Kimiyasu Ishikawa | 1994-11-08 |
| 5361043 | Delay circuit for changeably delaying an analog signal | Masafumi Shimotashiro, Kouiti Hayashi, Yoshio Higashida | 1994-11-01 |
| 5353252 | Semiconductor integrated circuit device having digit line biasing means | — | 1994-10-04 |
| 5351212 | Non-volatile semiconductor memory device equipped with high-speed sense amplifier unit | — | 1994-09-27 |
| 5336589 | Photographic material | Yasuo Mukunoki, Yukio Shinagawa, Junichi Yamanouchi | 1994-08-09 |
| 5329488 | Nonvolatile semiconductor memory device with redundancy circuit | — | 1994-07-12 |
| 5293333 | Non-volatile semiconductor memory device equipped with high-speed sense amplifier unit | — | 1994-03-08 |
| 5258879 | Tracking error detection circuit of magnetic recording and reproduction apparatus for determining tracking error based on pilot signals recorded on a recording meedium | Masafumi Shimotashiro, Makoto Gotou, Haruo Isaka, Kei Ichikawa, Kenichi Honjo +2 more | 1993-11-02 |
| 5241505 | Read only memory device with high speed data output unit | — | 1993-08-31 |
| 5214606 | Non-volatile semiconductor memory and method for driving the same | — | 1993-05-25 |
| 5016222 | Circuit responsive to a voltage change for detecting erroneous writing into a memory | — | 1991-05-14 |
| 5008566 | Power supply voltage drop detection circuit for use in EEPROM memory | — | 1991-04-16 |