Issued Patents All Time
Showing 1–25 of 103 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1057017 | Refill for a ball-point pencil | Toshikazu Sasaki | 2025-01-07 |
| 12090777 | Writing instrument refills and writing instrument | Toshikazu Sasaki | 2024-09-17 |
| D1010733 | Mechanical pencil | Hiroaki Kondo, Takaaki Nakata, Tadao Odaka, Takeshi Wakayama | 2024-01-09 |
| D998038 | Writing instrument | Hiroaki Kondo, Takaaki Nakata, Tadao Odaka, Takeshi Wakayama | 2023-09-05 |
| 11390109 | Mechanical pencil | Takeshi Wakayama | 2022-07-19 |
| 11090969 | Mechanical pencil | Tadao Odaka, Toshikazu Sasaki | 2021-08-17 |
| 11065907 | Hand tools, cosmetic devices and writing instruments | Takeshi Wakayama | 2021-07-20 |
| D908796 | Sleeve for a mechanical pencil | Takeshi Wakayama | 2021-01-26 |
| D895729 | Mechanical pencil | Takeshi Wakayama | 2020-09-08 |
| D871502 | Sleeve with cushion spring for mechanical pencil | Takeshi Wakayama | 2019-12-31 |
| 10343446 | Writing instrument | Takeshi Wakayama, Yoshio Noguchi | 2019-07-09 |
| 9862225 | Liquid applying tool | Yoshio Noguchi, Sachio Arai | 2018-01-09 |
| 9738112 | Mechanical pencil | Tadao Odaka | 2017-08-22 |
| 9114922 | Knock-type propelling container | Yoshio Noguchi, Tomoaki Suzuki | 2015-08-25 |
| 9067233 | Stick-shaped material propelling container | Yoshio Noguchi | 2015-06-30 |
| 8970560 | Writing instrument | Tadashi Keda, Sachio Arai | 2015-03-03 |
| 8899857 | Pivotal manipulation type writing instrument | Akira Miyoshi, Masahiro Kaneko | 2014-12-02 |
| 8740489 | Liquid applicator | Yoshio Noguchi, Yoshiyuki Sawayama | 2014-06-03 |
| 8484808 | Clip attachment structure for a writing instrument | Tadao Odaka | 2013-07-16 |
| 8444336 | Lead cartridge and mechanical pencil with built-in lead cartridge | Yoshio Noguchi | 2013-05-21 |
| 8434957 | Knock-type writing instrument | — | 2013-05-07 |
| 8348535 | Stick-shaped material propelling container | — | 2013-01-08 |
| 7922411 | End plug mounting structure for writing instrument | — | 2011-04-12 |
| 7878726 | Stick-shaped material propelling container | Tadashi Keda | 2011-02-01 |
| 7607203 | Clip ornament for a barrel, clip with an ornament and method for attaching an ornament to a clip | Sachio Arai | 2009-10-27 |