Issued Patents All Time
Showing 26–50 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5082733 | Magnetic recording medium containing magnetic particles surface treated with a glycidyl compound | Hideomi Watanabe, Mikio Ohno, Hiroshi Hashimoto | 1992-01-21 |
| 5079085 | Magnetic recording medium containing a binder which is chemically bonded to crosslinked resin fine particles contained in the magnetic layer | Hiroshi Hashimoto | 1992-01-07 |
| 5068145 | Magnetic recording medium in which the magnetic layer contains a vinyl compound having an inner salt of an alkyl amino alkyl group | Hideomi Watanabe | 1991-11-26 |
| 5061564 | Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both | Takao Ohya, Jun Nakagawa, Satoru Hayakawa, Yasuo Nishikawa, Hiroshi Hashimoto | 1991-10-29 |
| 5057373 | Magnetic recording medium | Fumihiro Tokunaga, Jun Nakagawa, Toshio Kawamata | 1991-10-15 |
| 5051318 | Magnetic recording medium containing an organic silicone compound having branched chaw saturated hydrocarbon groups | Yasuo Nishikawa | 1991-09-24 |
| 5049448 | Magnetic recording medium containing an ester lubricant branched from the number 2 carbon position of the acid residue | Takao Ohya, Yasuo Nishikawa, Jun Nakagawa, Fusao Yamanaka, Toshio Kawamata +2 more | 1991-09-17 |
| 5045351 | Process for producing a magnetic recording medium | Yasuo Nishikawa, Hiroshi Hashimoto, Hideomi Watanabe | 1991-09-03 |
| 5024892 | Magnetic recording medium having a binder comprising a copolymer which includes a vinyl compound having a dialkylaminoalkyl group | Hideomi Watanabe | 1991-06-18 |
| 4980199 | Process for producing a magnetic recording medium | Yutaka Kakuishi | 1990-12-25 |
| 4976989 | Method for preparing a magnetic recording medium | Masashi Aonuma, Hiroshi Hashimoto, Kingo Kobayashi | 1990-12-11 |
| 4970121 | Magnetic recording medium | Fumihiro Tokunaga, Jun Nakagawa, Toshio Kawamata, Kazuo Hasumi | 1990-11-13 |
| 4959263 | Magnetic recording medium | Masashi Aonuma, Hiroshi Hashimoto, Hiroaki Araki, Kiyotaka Fukino, Kiyomi Ejiri | 1990-09-25 |
| 4952435 | Adhesive for a base-mounted flexible magnetic disc | — | 1990-08-28 |
| 4937098 | Method for manufacturing a magnetic recording medium | Yasuo Nishikawa, Mikio Ohno, Masaaki Fujiyama | 1990-06-26 |
| 4886703 | Magnetic recording medium | Kazuo Hasumi, Hideomi Watanabe, Katsumi Ryoke, Hideaki Kosha | 1989-12-12 |
| 4880692 | Magnetic recording medium | Katsumi Ryoke, Masatoshi Takahashi, Akihiro Hashimoto, Kazuko Hanai | 1989-11-14 |
| 4880693 | Magnetic recording medium | Katsumi Ryoke, Masatoshi Takahashi, Akihiro Hashimoto, Takashi Yoneyama | 1989-11-14 |
| 4874636 | Method for preparing magnetic recording medium | Hiromi Nakahara, Hiroshi Ogawa | 1989-10-17 |
| 4873138 | Metallic thin film type magnetic recording medium | — | 1989-10-10 |
| 4837081 | Magnetic recording medium | Yasuyuki Yamada, Hajime Miyatsuka, Nobuo Tsuji | 1989-06-06 |
| 4812351 | Magnetic recording medium | Masashi Aonuma, Hiroshi Hashimoto | 1989-03-14 |
| 4810435 | Method of making substrate for magnetic recording medium | Koh Kamada, Hiroshi Hashimoto | 1989-03-07 |
| 4800458 | Recording sheet bonded to a substrate in a magnetic disk | — | 1989-01-24 |
| 4788103 | Magnetic recording medium | Kazuko Hanai, Yasuyuki Yamada | 1988-11-29 |