Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458870 | Process for preparing an aqueous solution of sulfanilic acid modified melamine-formaldehyde resin and a cement composition | Takaichi Sugiyama, Yuhji Sudoh, Keisuke Nakayama | 2002-10-01 |
| 6396337 | Transistor circuit with direct-coupled stages | — | 2002-05-28 |