Issued Patents 2002
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6479874 | Semiconductor memory device having multilevel memory cell and method of manufacturing the same | Kenji Hibino, Masao Kunitou, Tetsuji Togami, Hironori Sakamoto, Kiyokazu Hashimoto | 2002-11-12 |
| 6464874 | Waste water treatment method and waste water treatment apparatus | Norio Sawai, Kazumi Chujou | 2002-10-15 |
| 6423228 | Treating fluorine waste water containing organic matter, phosphor and hydrogen peroxide | Kazuyuki Sakata, Noriyuki Tanaka | 2002-07-23 |
| 6413417 | Waste water treatment apparatus | Kazumi Chujo, Seiji Okamoto, Yukihiro Tao | 2002-07-02 |
| 6375837 | Waste water treatment method being able to treat surface active agent, nitrogen, hydrogen peroxide and phosphor with high efficiency and equipment therefor | Noriyuki Tanaka, Shigeki Matsumoto | 2002-04-23 |
| 6344142 | Waste water treatment method and apparatus | Norio Sawai, Kazumi Chujo | 2002-02-05 |
| 6337810 | Semiconductor memory device and method for reading data | Tonomi Egawa | 2002-01-08 |