Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933356 | Particles of carboxylated polymer | Shigeki Hamamoto, Masatoyo Yoshinaka | 2005-08-23 |
| 6869994 | Carboxylated polymer composition | Masato Fujikake, Shigeki Hamamoto, Masatoyo Yoshinaka | 2005-03-22 |