Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11780258 | Liquid storage member for coating tools | Shinobu Kajiyama, Takeshi Iimori, Takayuki Yamaguchi | 2023-10-10 |
| 11679618 | Ink reservoir unit for writing instruments and writing instruments | — | 2023-06-20 |
| 9790384 | Ink composition for writing instrument and coloring material | — | 2017-10-17 |
| 9315672 | Colorant, microcapsule pigment prepared by using the same and ink composition for writing instrument | — | 2016-04-19 |
| 8764104 | Structure of front section of vehicle body | Makoto Kihara, Tomoya Takeda | 2014-07-01 |
| 8702148 | Structure for front section of vehicle body | — | 2014-04-22 |
| 8702158 | Structure for vehicle body front portion | Makoto Kihara, Daisuke Naoi | 2014-04-22 |
| 7794533 | Oil-based ink composition for writing utensil and writing utensil employing the same | — | 2010-09-14 |
| 7521491 | Oil-based ink composition for ballpoint pen and ball-point pen using oil-based ink | Miyuki Shoji | 2009-04-21 |
| 7462229 | Oil-based ink composition for ballpoint pen using oil-based ink | Miyuki Shoji | 2008-12-09 |
| 7311459 | Follower for non-aqueous ball point pen and non-aqueous ball point pen | Takayuki Ikai | 2007-12-25 |
| 7172648 | Oil-base ballpoint ink composition and oily ballpoint pens | — | 2007-02-06 |
| 7071245 | Oil-based ballpoint pen ink composition and oil-based ballpoint pen | — | 2006-07-04 |
| 7056052 | Ink reservoir for writing instrument | Kazuhiko Furukawa, Takeshi Kobayashi | 2006-06-06 |
| 6786956 | Ballpoint pen oil-based ink composition and ballpoint pens | — | 2004-09-07 |
| 6777570 | Process for producing norbornene derivative having organosilyl group | Hiroko Takahashi, Takako Takahashi, Taketoshi Naito | 2004-08-17 |
| 6531594 | Process for producing 1H-3-aminopyrrolidine and derivatives thereof | Michi Watanabe, Takeshi Nakato, Jun Takehara, Kazuaki Kanno | 2003-03-11 |
| 6077971 | Method for purifying homocystine | Jun Takehara, Hiroshi Iwane, Hirotaka Ryutou, Kenichi Sugimoto, Toshihiko Yahata | 2000-06-20 |
| 6051629 | Ink composition | Kazumi Goto | 2000-04-18 |
| 6048914 | Ink composition for writing instrument | Kazumi Goto | 2000-04-11 |
| 5980624 | Oil base ink composition | — | 1999-11-09 |
| 5847205 | Method for producing homocystine | Jun Takehara, Hiroshi Iwane | 1998-12-08 |
| 5606079 | Process for the selective hydroformylation of terminal olefin groups and its use in the preparation of 1,4-butanedial monoacetal | Akiko Fujita, Naoko Sumitani, Yuji Ohgomori | 1997-02-25 |
| 5594090 | Alkylene sulfide group-containing prepolymer, polymerizable composition and optical material | Tsuyoshi Miyazaki, Hiromitsu Nakajima, Yasumi Koinuma, Kazuo Matsuyama, Koji Kamenosono +1 more | 1997-01-14 |
| 5348890 | Trioxane derivatives, and method for the chemiluminescence | Motohiro Mitani, Yuko Yokoyama, Hideo Sawada, Takeo Matsumoto | 1994-09-20 |