Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5480713 | Magnetic recording medium | Kunitsuna Sasaki, Katsuyuki Takeda, Nobuyuki Sekiguchi, Hideki Takahashi, Ryosuki Isobe +1 more | 1996-01-02 |
| 5455104 | Magnetic recording medium | Nobuyuki Sekiguchi, Katsuyuki Takeda, Ryosuke Isobe, Hideki Takahashi | 1995-10-03 |
| 5366795 | Magnetic recording medium having three layers each containing particles and a binder wherein the relationship of particle crystal size in the second and third layers is specified | — | 1994-11-22 |
| 5324571 | Magnetic recording medium comprising a support and a plurality of layers in which the magnetic layer has a specified plastic deformation | Noboru Koyama, Ryosuke Isobe, Takahiro Mori | 1994-06-28 |
| 5324582 | Magnetic recording medium | Katsuyuki Takeda, Kunitsuna Sasaki, Nobuyuki Sekiguchi | 1994-06-28 |
| 5320901 | Magnetic recording medium | Katsuyuki Takeda, Kunitsuna Sasaki, Nobuyuki Sekiguchi | 1994-06-14 |
| 5304416 | Magnetic recording medium | Katsuyuki Takeda, Kunitsuna Sasaki, Nobuyuki Sekiguchi | 1994-04-19 |
| 5252392 | Magnetic recording medium comprising multiple magnetic layers with specified composition and properties | Nobuyuki Sekiguchi | 1993-10-12 |
| 5215833 | Magnetic recording medium | Katsuyuki Takeda, Kunitsuna Sasaki, Nobuyuki Sekiguchi | 1993-06-01 |
| 5156916 | Magnetic recording medium comprising a polyurethane binder having a polar group and containing iron carbide | — | 1992-10-20 |
| 5149585 | Magnetic recording medium | Katsuyuki Takeda, Kunitsuna Sasaki, Nobuyuki Sekiguchi | 1992-09-22 |
| 5102732 | Magnetic recording medium | Yasuo Ando | 1992-04-07 |
| 5098785 | Magnetic recording medium containing a copolymer having an anionic functional group which forms an intermolecular salt | Takafumi Yanagita, Tsutomu Kempo, Takuo Nishikawa, Noboru Koyama, Yasushi Nakano +1 more | 1992-03-24 |
| 5069949 | Magnetic recording medium | Atsuko Matsuda | 1991-12-03 |
| 5066534 | Magnetic recording medium | Yasuo Ando | 1991-11-19 |
| 5064720 | Magnetic recording medium containing a polyurethane binder resin having a betaine group in the form of an intermolecular salt | Tsutomu Kempo, Atsuko Matsuda | 1991-11-12 |