Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6491372 | Ink jet recording method and ink jet recording apparatus | Yasuyuki Tamura | 2002-12-10 |
| 6471350 | Method of protecting heater surface of ink-jet printer, ink-jet recording apparatus, recording unit and method of prolonging service life of ink-jet recording head | Ryuji Katsuragi, Hideto Yokoi | 2002-10-29 |
| 6425659 | METHOD FOR ALLEVIATING KOGATION ON SURFACE OF HEATER OF INK-JET RECORDING HEAD, METHOD FOR INK-JET RECORDING, INK-JET RECORDING APPARATUS, RECORDING UNIT, AND METHOD FOR PROLONGING INK-JET RECORDING HEAD LIFE | Ryuji Katsuragi | 2002-07-30 |
| 6406114 | Tonal product recorded by ink and having a plurality of pixels with plural tonal levels | — | 2002-06-18 |
| 6394594 | Ink, method of reducing kogation on heater of ink-jet recording head, ink-jet recording process, ink-jet recording apparatus, recording unit, and method for lengthening the life of recording head | Ryuji Katsuragi | 2002-05-28 |