Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7569614 | Process for producing acidic aqueous alumina sol | Kiyomi Ema | 2009-08-04 |
| 6458870 | Process for preparing an aqueous solution of sulfanilic acid modified melamine-formaldehyde resin and a cement composition | Jun Uchida, Yuhji Sudoh, Keisuke Nakayama | 2002-10-01 |
| 6214965 | Process for preparing an aqueous solution of sulfanilic acid modified melamine-formaldehyde resin and a cement composition | Jun Uchida, Yuhji Sudoh, Keisuke Nakayama | 2001-04-10 |
| 5989391 | Reaction product of sulfonated amino resin and amino group-containing substance and papermaking process | Yoshitane Watanabe, Kiyomi Ema, Hisanobu Urahata, Michie Kaneko | 1999-11-23 |