Issued Patents All Time
Showing 25 most recent of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7902739 | Organic light emitting device with prism | Hiroyuki Kitayama | 2011-03-08 |
| 7834542 | Organic light-emitting apparatus | Hiroyuki Kitayama | 2010-11-16 |
| 7683533 | Organic electroluminescent device provided with a polarizing plate, a prism member and a phase member in a stacked arrangement | Hiroyuki Kitayama | 2010-03-23 |
| 7309619 | Light-emitting element, production method thereof, and light-emitting apparatus | Toshinori Hasegawa | 2007-12-18 |
| 7163831 | Light-emitting element, production method thereof, and light-emitting apparatus | Toshinori Hasegawa | 2007-01-16 |
| 6998182 | Organic luminescence device | Akihito Saitoh, Kazunori Ueno | 2006-02-14 |
| 6583557 | Organic luminescent element | Yuichi Hashimoto, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Kazunori Ueno +2 more | 2003-06-24 |
| 6342754 | Charge-reducing film, image forming apparatus including said film and method of manufacturing said image forming apparatus | Kazuo Kuroda, Hiroshi Takagi, Noriaki Ohguri, Yoshimasa Okamura, Takao Kusaka | 2002-01-29 |
| 6028824 | Magnetooptical recording medium allowing overwriting with two or more magnetic layers | Hisaaki Kawade, Eiichi Fujii, Nobuhiro Kasama, Tadashi Kobayashi | 2000-02-22 |
| 5783300 | Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same | Hisaaki Kawade, Eiichi Fujii, Nobuhiro Kasama, Tadashi Kobayashi | 1998-07-21 |
| 5652738 | Magnetooptical recording method for overwriting information on a recording medium includes selecting one of two recording modes based on recording information | Katsumi Miyata | 1997-07-29 |
| 5604046 | Magneto-optical recording medium and a method using the same | — | 1997-02-18 |
| 5596555 | Magnetooptical recording medium having magnetic layers that satisfy predetermined coercive force relationships, and recording/reproduction method for the medium | Katsumi Miyata | 1997-01-21 |
| 5591515 | Magnetic recording medium with a recording layer composed of laminate structure of magnetic films and non-magnetic films, and method for producing the same | — | 1997-01-07 |
| 5536570 | Overwrite capable magneto-optical recording medium having three magneto-optic layers | — | 1996-07-16 |
| 5529864 | Optical recording medium having mask layer | Shinichi Tachibana | 1996-06-25 |
| 5525378 | Method for producing a magnetooptical recording medium | Hisaaki Kawade, Eiichi Fujii, Nobuhiro Kasama, Tadashi Kobayashi | 1996-06-11 |
| 5521006 | Magneto-optical recording medium | — | 1996-05-28 |
| 5503924 | Exchange-coupled magnetooptical recording medium with first layer having smaller vertical orientation saturation magnetization than in-plane orientation saturation magnetization of second layer | — | 1996-04-02 |
| 5502692 | Method and apparatus for recording, reproducing and overwriting information on or from a magnetooptic disk having three magnetic layers | — | 1996-03-26 |
| 5481410 | Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same | Hisaaki Kawade, Eiichi Fujii, Nobuhiro Kasama, Tadashi Kobayashi | 1996-01-02 |
| 5410521 | Method and apparatus for recording information on a medium having biaxial magnetic anisotropy using parallel and perpendicular magnetic fields | — | 1995-04-25 |
| 5370945 | Magnetooptic recording medium | — | 1994-12-06 |
| 5265073 | Overwritable magneto-optical recording medium having two-layer magnetic films wherein one of the films contains one or more of Cu, Ag, Ti, Mn, B, Pt, Si, Ge, Cr and Al, and a method of recording on the same | — | 1993-11-23 |
| 5163031 | Method of recording tetra-value signal on magneto-optical recording medium with plural magnetic layers | — | 1992-11-10 |