Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651816 | Cement, cement products, molding material, concrete member and a method of producing the same | Tadashi Kobayashi, Masaki Hasegawa | 1997-07-29 |
| 5614009 | Cement, cement products, molding material, a concrete member and a method of producing the same | Tadashi Kobayashi, Masaki Hasegawa | 1997-03-25 |
| 5609680 | Cement, cement products, molding material, a concrete member and a method of producing the same | Tadashi Kobayashi, Masaki Hasegawa | 1997-03-11 |