Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5237858 | Method for determining the unhydration ratio of cement contained in cement sludge | Fumio Iwase, Yoshihisa Nakanishi | 1993-08-24 |
| 5209130 | Method for recycling wash residue of ready mixed concrete and system therefor | Fumio Iwase, Yoshihisa Nakanishi | 1993-05-11 |
| 5178455 | Method for recycling wash residue of ready mixed concrete and system therefor | Fumio Iwase, Yoshihisa Nakanishi | 1993-01-12 |
| 5075411 | Curable epoxy resin composition for structural parts containing polyamine derived mannich base and novolac or bisphenol F epoxy resin | Akio Ogawa, Takeichiro Takehara, Tadashi Ashida, Seiichiro Hashimoto | 1991-12-24 |