Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5545309 | Method of processing organic quaternary ammonium hydroxide-containing waste liquid | Shumpei Shimizu, Toshitsura Cho | 1996-08-13 |
| 5439564 | Method of processing organic quaternary ammonium hydroxide-containing waste liquid | Shumpei Shimizu, Toshitsura Cho | 1995-08-08 |
| 4762695 | Methods for preparing high-purity molybdenum or tungsten powder and high-purity oxides powder of the same | Hiroshi Endo, Masaru Hayashi, Tsutomu Yamashita, Satoshi Yamaguchi, Motoo Seimiya | 1988-08-09 |
| 4414124 | Method of producing barium-ferrite series powder | Hiroshi Endo, Masashi Awa, Toshihiko Oguchi, Isao Suzuki, Naoyuki Hirate +1 more | 1983-11-08 |