Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700575 | Water-insoluble ammonium polyphosphate particles | Masuo Iwata, Mika Seki, Ryoji Takahashi, Tikashi Fukumura, Masaya Tanaka | 1997-12-23 |
| 5689470 | Semiconductor memory device and method for accessing a memory in the same | — | 1997-11-18 |
| 5599626 | Melamine-coated ammonium polyphosphate | Chikashi Fukumura, Masuo Iwata, Noriaki Narita, Ryoji Takahashi | 1997-02-04 |