Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639092 | Metal salt of binaphthol derivative and method for preparing the same | Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori | 2003-10-28 |
| 6562998 | Granules of 2-hydroxynaphthalene-3-carboxylic acid and method for preparing the same | Masaya Kitayama, Nobutaka Izumichi, Syungo Nara, Masaharu Kittaka | 2003-05-13 |
| 6548703 | Toning agent | Masaya Kitayama, Kenji Minami, Masamitsu Kubotsu | 2003-04-15 |