Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7061703 | Master information carrier and method for manufacturing magnetic disc using the same | Tatsuaki Ishida, Keizo Miyata, Nobuyuki Komura, Taizou Hamada, Hideyuki Hashi | 2006-06-13 |
| 7057834 | Master information carrier and method for manufacturing magnetic disc using the same | Tatsuaki Ishida, Keizo Miyata, Nobuyuki Komura, Taizou Hamada, Hideyuki Hashi | 2006-06-06 |
| 6994029 | Magnetic transfer method and magnetic transfer device | Hideyuki Hashi, Taizo Hamada, Toshio Makabe, Kiyokazu Toma, Tatsuaki Ishida +1 more | 2006-02-07 |
| 6914735 | Manufacturing method for magnetic recording medium, and master information carrier used therefor | Taizou Hamada, Tatsuaki Ishida | 2005-07-05 |
| 6859339 | Master information magnetic recording apparatus and method for manufacturing magnetic recording medium in which information is recorded by using this | Keizo Miyata, Taizou Hamada, Kouji Taniguchi, Masaya Sakaguchi | 2005-02-22 |
| 6858329 | Master disc and method for manufacturing magnetic disc using the same | Taizou Hamada, Hideyuki Hashi, Tatsuaki Ishida, Nobuyuki Komura, Keizo Miyata +1 more | 2005-02-22 |
| 6833972 | Method for reproducing phase information signals in an information recording device | Taizou Hamada | 2004-12-21 |
| 6785070 | Magnetic transcription device | Kouji Taniguchi, Kaoru Matsuoka, Taizou Hamada, Hideyuki Hashi, Tatsuaki Ishida | 2004-08-31 |
| 6665133 | Magnetic transfer method and magnetic transfer device | Hideyuki Hashi, Taizo Hamada, Toshio Makabe, Kiyokazu Toma, Tatsuaki Ishida +1 more | 2003-12-16 |
| 6646820 | Method for recording magnetic recording medium | Tatsuaki Ishida, Taizou Hamada, Hideyuki Hashi, Keizo Miyata, Hiromi Kita | 2003-11-11 |
| 5554440 | Magnetic recording medium and method for producing the same | Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma | 1996-09-10 |
| 5534324 | Magnetic recording medium and method for producing the same | Ryuji Sugita, Kiyokazu Tohma, Tatsuaki Ishida | 1996-07-09 |
| 5472506 | Method and apparatus for producing magnetic recording medium | Kiyokazu Tohma, Ryuji Sugita, Tatsuaki Ishida | 1995-12-05 |
| 5458914 | Method for producing magnetic recording medium | Kiyokazu Tohma, Ryuji Sugita, Tatsuaki Ishida | 1995-10-17 |
| 5427869 | Magnetic recording medium and method for producing the same | Ryuji Sugita, Kiyokazu Tohma, Tatsuaki Ishida | 1995-06-27 |
| 5418059 | Magnetic recording medium and method for producing the same | Ryuji Sugita, Kiyokazu Tohma, Tatsuaki Ishida | 1995-05-23 |