Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6747811 | Optical system, method of producing optical system, and optical pickup | Koichiro Kishima | 2004-06-08 |
| 6724544 | Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus | Koichiro Kishima | 2004-04-20 |
| 6631099 | MAGNETIC FIELD MODULATION MAGNETIC HEAD, MAGNETO-OPTICAL ELEMENT, OPTICAL PICKUP DEVICE, AND OPTICAL DISK DRIVE, IN WHICH FIRST AND SECOND MAGNETIC CORES ARE PLACED ON OPPOSITE SIDES OF MAGNETIC FIELD GENERATION COIL TO ACHIEVE LOW POWER CONSUMPTION AND HIGH EFFICIENCY | — | 2003-10-07 |
| 6358379 | Method of forming a magneto-resistance effect thin film | — | 2002-03-19 |
| 6101071 | MR film with upper and lower magnetic layers with resistivity greater than that of MR film magnetic layers | — | 2000-08-08 |
| 6064632 | Recording/reproducing apparatus and a magneto-optical recording medium for use therewith | Ariyoshi Nakaoki, Katsuhisa Aratani | 2000-05-16 |
| 5978320 | Recording/reproducing apparatus for use with a photomagnetic recording medium | Ariyoshi Nakaoki, Katsuhisa Aratani | 1999-11-02 |
| 5242762 | Magnetic recording medium having an underlayer and a thin film magnetic layer which consists of a specified cobalt-platinum-palladium alloy | — | 1993-09-07 |