Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9240204 | Perpendicular magnetic recording disc | Teiichiro Umezawa, Takenori Kajiwara | 2016-01-19 |
| 9142241 | Perpendicular magnetic recording medium and method of manufacturing the same | Takahiro Onoue, Takenori Kajiwara | 2015-09-22 |
| 8877359 | Magnetic disk and method for manufacturing same | Chiyo Saito, Takenori Kajiwara | 2014-11-04 |
| 8865327 | Perpendicular magnetic disc | Takenori Kajiwara | 2014-10-21 |
| 8828566 | Perpendicular magnetic recording disc | Takenori Kajiwara | 2014-09-09 |
| 8795857 | Perpendicular magnetic recording medium and manufacturing method of the same | Kenji Ayama, Teiichiro Umezawa, Masafumi Ishiyama | 2014-08-05 |
| 8623528 | Method of manufacturing perpendicular magnetic recording medium and perpendicular magnetic recording medium | Teiichiro Umezawa, Masafumi Ishiyama, Kenji Ayama, Takahiro Onoue, Junichi Horikawa | 2014-01-07 |
| 8453315 | Method of producing a perpendicular magnetic disc | Takenori Kajiwara | 2013-06-04 |
| 8431258 | Perpendicular magnetic recording medium and method of manufacturing the same | Takahiro Onoue, Takenori Kajiwara | 2013-04-30 |
| 8404370 | Perpendicular magnetic recording medium and method of manufacturing the same | Takahiro Onoue, Takenori Kajiwara | 2013-03-26 |
| 8309239 | Perpendicular magnetic recording medium and method of manufacturing the same | Teiichiro Umezawa, Masafumi Ishiyama, Kenji Ayama | 2012-11-13 |
| 8142916 | Magnetic recording medium | Teiichiro Umezawa, Masafumi Ishiyama, Kenji Ayama | 2012-03-27 |
| 8057926 | Perpendicular magnetic recording medium | Kenji Ayama, Teiichiro Umezawa, Masafumi Ishiyama, Junichi Horikawa | 2011-11-15 |