Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6444020 | TETRAALKYL-SUBSTITUTED NITROGEN-CONTAINING HETERO RING-BONDED AZO DYE, INK-JET INK COMPRISING SAID DYE, INK-JET RECORDING METHOD USING SAID INK, AND THERMAL TRANSFER RECORDING MATERIAL COMPRISING SAID DYE | Takayoshi Kamio | 2002-09-03 |
| 6399712 | Polymer bound 2,2,6,6,-piperidinyl derivatives | Takayoshi Kamio | 2002-06-04 |