Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7072272 | Diffraction type optical pickup lens and optical pickup apparatus using the same | Masato Kawabata, Toshiaki Katsuma | 2006-07-04 |
| 6342976 | Luminous flux diameter variable type objective lens and optical apparatus using the same | Yoshimitsu Nomura, Masato Kawabata | 2002-01-29 |
| 6088160 | Diffractive optical element | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 2000-07-11 |
| 6055111 | Plastic lens and method of making a plastic lens | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 2000-04-25 |
| 6050406 | Storage case for diffraction grating | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 2000-04-18 |
| 6034827 | Optical lens | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 2000-03-07 |
| 6010647 | Multifocal lens and method of making the same | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 2000-01-04 |
| 6008957 | Optical lens and method of making the same | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 1999-12-28 |
| 6008955 | Optical lens | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 1999-12-28 |
| 5995304 | Plastic lens | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 1999-11-30 |
| 5982565 | Plastic lens and method of making the same | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 1999-11-09 |
| 5960951 | Lens case containing lenses with reduced contact area | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 1999-10-05 |
| 5936782 | Objective lens for a pickup optical system | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 1999-08-10 |
| 5905599 | Optical lens having a hygroscopicity adjusting part | Yoshimitsu Nomura, Masaaki Fukuda, Takashi Ito | 1999-05-18 |