Issued Patents All Time
Showing 76–100 of 103 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5462376 | Mechanical pencil with improved slider mechanism | Shouji Anzai, Yoshihide Mitsuya | 1995-10-31 |
| 5388722 | Stick-shaped object dispenser | — | 1995-02-14 |
| 5090831 | Writing instrument | Yoshihide Mitsuya, Youichi Nakazato | 1992-02-25 |
| 5056947 | Dual refill-type writing utensil | Masuo Kubota, Saburo Kobayashi, Yoshihide Mitsuya, Tadayoshi Ebinuma | 1991-10-15 |
| 5022772 | Rotary knock type mechanical pencil | Robert Lozeau | 1991-06-11 |
| 5018891 | Writing instrument with eraser dispenser | Yoshihide Mitsuya, Youichi Nakazato | 1991-05-28 |
| 5009533 | Propelling pencil with cushion sleeve | — | 1991-04-23 |
| 4998837 | Lead cartridge with an openable capping structure | Yoshihide Mitsuya | 1991-03-12 |
| 4957384 | Mechanical pencil | Yoshihide Mitsuya, Youichi Nakazato | 1990-09-18 |
| 4955739 | Mechanical pencil having side push button actuated lead advance | Yoshihide Mitsuya, Youichi Nakazato | 1990-09-11 |
| 4896982 | Lead feed mechanism for mechanical pencil | Yoshihide Mitsuya | 1990-01-30 |
| 4895467 | Rotary knock type mechanical pencil | Robert Lozeau | 1990-01-23 |
| 4884910 | Mechanical pencil | Yoshihide Mitsuya, Yoichi Nakazato | 1989-12-05 |
| 4872776 | Lead chuck of mechanical pencil | Yoshihide Mitsuya, Yoichi Nakazato | 1989-10-10 |
| 4836703 | Lead cartridge opening and closing unit | Yoshihide Mitsuya, Saburo Kobayashi | 1989-06-06 |
| 4714365 | Mechanical pencil | Yukimasa Kuwabara | 1987-12-22 |
| 4687363 | Mechanical pencil and method for assembling the same | — | 1987-08-18 |
| 4676684 | Lead delivery mechanism for mechanical pencil | — | 1987-06-30 |
| 4669904 | Writing instrument with weight actuation | Takahiko Suzuki | 1987-06-02 |
| 4627756 | Lead propelling mechanism for a mechanical pencil | — | 1986-12-09 |
| 4620811 | Mechanical pencil | — | 1986-11-04 |
| 4619539 | Mechanical pencil equipped with lead-storing cartridge | — | 1986-10-28 |
| 4618280 | Push-button writing instrument with front seal means | — | 1986-10-21 |
| 4403691 | Spare lead holder | Takahiko Suzuki | 1983-09-13 |
| 4386865 | Automatic sharp pencil | Takahiko Suzuki | 1983-06-07 |