Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6645909 | Process for azo coupling reaction using diazonium salt and coupler having releasing group, and recording material containing the coupler | Akinori Fujita | 2003-11-11 |
| 6600041 | Method of preparing pyrrolotriazin-4-one compound and method of preparing isothiocyanatoformic acid ester derivative that is a reactant used for preparing pyrrolotriazin-4-one compound | — | 2003-07-29 |