Issued Patents All Time
Showing 101–125 of 131 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6087004 | Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom | Yasuyuki Tanaka, Hiroko Morii, Hiroshi Sumita | 2000-07-11 |
| 6063490 | Magnetic recording medium comprising non-magnetic acicular particles containing mainly iron and having titanium dispersed therein | Keisuke Iwasaki, Toshiharu Harada, Hiroko Morii | 2000-05-16 |
| 6054201 | Magnetic recording medium | Keisuke Iwasaki, Hiroko Morii, Yasuyuki Tanaka | 2000-04-25 |
| 6042937 | Titanium oxide particles, substrate for magnetic recording medium and magnetic recording medium using the same | Keisuke Iwasaki, Yasuyuki Tanaka, Hiroko Morii | 2000-03-28 |
| 6030688 | Rectangular parallelopipedic lepidocrocite particles and magnetic recording medium containing the particles | Hiroko Morii, Yoshiro Okuda, Keisuke Iwasaki | 2000-02-29 |
| 6027559 | Yellow iron oxide hydroxide particles and process for producing the same | Hiroko Morii, Mineko Ohsugi, Hiroshi Sumita | 2000-02-22 |
| 6019834 | Pigment, process for producing the same and paint using the same | Mineko Ohsugi, Hiroko Morii, Mamoru Kamigaki | 2000-02-01 |
| 5994611 | Method of incinerating plastic products containing ferric oxide hydroxide particles | Masaharu Nishihara, Masaaki Nishikawa, Suminori Tanaka, Nanao Horiishi, Satoru Saito +2 more | 1999-11-30 |
| 5922464 | Iron oxide particles | Minoru Ohsugi, Hiroko Morii, Koso Aoki | 1999-07-13 |
| 5900313 | Plastic formed product containing specific particles of ferric oxide hydroxide or iron oxide | Masaharu Nishihara, Masaaki Nishikawa, Suminori Tanaka, Nanao Horiishi, Satoru Saito +2 more | 1999-05-04 |
| 5882795 | Non-magnetic coated particles having a defined parameter .alpha. of not less than 0.5 | Keisuke Iwasaki, Yasuyuki Tanaka, Minoru Ohsugi, Hiroko Morii, Mineko Sakoda +2 more | 1999-03-16 |
| 5830557 | Non-magnetic undercoating layer for magnetic recording medium, magnetic recording medium and non-magnetic particles | Keisuke Iwasaki, Yasuyuki Tanaka, Minoru Ohsugi, Hiroko Morii, Mineko Sakoda +2 more | 1998-11-03 |
| 5750250 | Hematite particles and magnetic recording medium having a non-magnetic under-coat layer containing hematite (Fe.sub.2 O.sub.3) particles. | Keisuke Iwasaki, Yasuyuki Tanaka, Hiroko Morii | 1998-05-12 |
| 5693690 | Rubber or resin composition | Minoru Ohsugi, Hiroko Morii, Koso Aoki | 1997-12-02 |
| 5686012 | Modified particles | Hiroko Morii, Mineko Sakoda, Minoru Ohsugi, Mamoru Kamigaki | 1997-11-11 |
| 5604015 | Non-magnetic undercoat layer for magnetic recording medium, magnetic recording medium and non-magnetic particles | Keisuke Iwasaki, Yasuyuki Tanaka, Minoru Ohsugi, Hiroko Morii, Mineko Sakoda +2 more | 1997-02-18 |
| 5587232 | Non-magnetic particles for non-magnetic undercoating layer of magnetic recording medium, non-magnetic undercoating layer containing the same, and magnetic recording medium having the undercoating layer | Keisuke Iwasaki, Yasuyuki Tanaka, Minoru Ohsugi, Toshiharu Harada, Masaru Isoai +1 more | 1996-12-24 |
| 5543069 | Magnetic particles for magnetic recording medium and process for producing the same | Minoru Ohsugi, Hiroko Morii, Norio Sugita | 1996-08-06 |
| 5525649 | Magnetic paint and process for producing the same | Akihiro Nishimura, Keisuke Iwasaki, Yasuyuki Tanaka, Hiroko Itamochi | 1996-06-11 |
| 5484545 | Magnetic particles for magnetic recording medium and process for producing the same | Minoru Ohsugi, Hiroko Morii, Norio Sugita | 1996-01-16 |
| 5372972 | Method of and an apparatus for processing a lead frame | Masahiro ISHIZUKA | 1994-12-13 |
| 5368933 | Superparamagnetic fine particles of iron oxide and magnetic recording media containing said particles | Koso Aoki, Masaaki Fukugauchi, Tomoyuki Imai, Nanao Horiishi | 1994-11-29 |
| 5291059 | Resin-molded semiconductor device and lead frame employed for fabricating the same | Masahiro Ishitsuka | 1994-03-01 |
| 5236783 | Superparamagnetic fine particles of iron oxide and magnetic recording media containing said particles | Koso Aoki, Masaaki Fukugauchi, Tomoyuki Imai, Nanao Horiishi | 1993-08-17 |
| 5183440 | Method for converting elliptical to rectangular motion | Masahiro ISHIZUKA | 1993-02-02 |