Issued Patents All Time
Showing 25 most recent of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5811209 | Color filter, production process thereof, and liquid crystal display panel equipped with the color filter | Katsuhiro Shirota, Takeshi Miyazaki | 1998-09-22 |
| 5482546 | Dye, ink containing the same, and ink-jet recording method and instrument using the ink | — | 1996-01-09 |
| 5466282 | Azo dye compound, ink containing the same, and recording method and instrument using the ink | Osamu Nishiwaki, Takao Yamamoto, Kumiko Mafune | 1995-11-14 |
| 5451251 | Ink, and ink-jet recording method and instrument using the same | Kumiko Mafune, Keiichi Murai, Yoshifumi Hattori, Mayumi Yamamoto, Osamu Nishiwaki +9 more | 1995-09-19 |
| 5258505 | Trisazo compounds, and dye compositions containing same | Mayumi Yamamoto, Takao Yamamoto | 1993-11-02 |
| 5231417 | Ink jet recording process, device, apparatus and cartridge employing ink | Katsuhiro Shirota, Megumi Saito, Takao Yamamoto | 1993-07-27 |
| 5215577 | Ink, and ink-jet recording method and apparatus employing the ink | Takao Yamamoto, Mayumi Yamamoto | 1993-06-01 |
| 5215578 | Ink containing tris-azo dye, ink-jet recording method and apparatus using the same | Mayumi Yamamoto, Takao Yamamoto | 1993-06-01 |
| 5216437 | Ink, and recording method making use of same | Takao Yamamoto, Katsuhiro Shirota, Megumi Saito | 1993-06-01 |
| 5213614 | Ink, ink jet recording process and recording apparatus using the same | Mayumi Yamamoto, Takao Yamamoto | 1993-05-25 |
| 5178671 | Ink, and ink-jet recording method and apparatus employing the ink | Takao Yamamoto, Mayumi Yamamoto | 1993-01-12 |
| 5167703 | Ink, ink-jet recording process and instrument making use of the ink | Mayumi Yamamoto, Takao Yamamoto | 1992-12-01 |
| 5139573 | Ink, and recording method making use of same | Takao Yamamoto, Katsuhiro Shirota, Megumi Saito | 1992-08-18 |
| 5135570 | Ink, and recording process making use of it | Megumi Saito, Katsuhiro Shirota, Takao Yamamoto | 1992-08-04 |
| 5130723 | Ink, and ink-jet recording method and apparatus employing the ink | Takao Yamamoto, Mayumi Yamamoto | 1992-07-14 |
| 5127946 | Ink, and ink-jet recording method and apparatus employing the ink | Takao Yamamoto, Mayumi Yamamoto | 1992-07-07 |
| 5123960 | Ink and ink jet recording method employing the same | Katsuhiro Shirota, Takao Yamamoto, Mayumi Yamamoto | 1992-06-23 |
| 5110356 | Ink, and recording process using the same | Katsuhiro Shirota, Megumi Saito, Takao Yamamoto | 1992-05-05 |
| 5082496 | Ink, and ink-jet recording method and apparatus employing the ink | Takao Yamamoto, Mayumi Yamamoto | 1992-01-21 |
| 5017227 | Recording liquid and ink-jet recording process using same | Shoji Koike, Takao Yamamoto | 1991-05-21 |
| 4867789 | Flocculant purification of ink | Makoto Shioya, Masatsune Kobayashi | 1989-09-19 |
| 4864324 | Color image forming method and ink used therefor | Katsuhiro Shirota, Yuko Suga | 1989-09-05 |
| 4804411 | Recording liquid | Yuko Suga, Katsuhiro Shirota | 1989-02-14 |
| 4778525 | Recording liquid | Masatsune Kobayashi, Makoto Shioya | 1988-10-18 |
| 4732613 | Recording liquid | Makoto Shioya, Masatsune Kobayashi | 1988-03-22 |