Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451910 | Acrylic premix, acrylic artificial marble and production method thereof | Seiya Koyanagi, Shinji Saiki | 2002-09-17 |
| 6323259 | Acrylic resin composition, acrylic premix, process for producing acrylic artificial marble and thickening agent | Yukihiro Ikegami, Seiya Koyanagi, Yoshihito Nakahara | 2001-11-27 |
| 6316548 | (Meth)acrylic premix, (meth)acrylic SMC or BMC, and process producing (meth)acrylic artificial marble | Seiya Koyanagi, Katsumi Yonekura, Shinji Saiki, Kentaro Hayashi | 2001-11-13 |
| 6265467 | Acrylic SMC or BMC, production thereof, method for producing acrylic artificial marble, and thickening agent | Seiya Koyanagi, Katsumi Yonekura, Shinji Saiki, Kentaro Hayashi, Yoshihito Nakahara | 2001-07-24 |