Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5133805 | Plate-like hematite particles, a pigment comprising the same and showing a golden color, and a process for producing the same | Tokihiro Kurata, Tsutomu Katamoto, Nanao Hiriishi | 1992-07-28 |
| 4851292 | Plate-like barium ferrite particles suitable for use in magnetic recording and process for producing the same | Norimichi Nagai, Akihiko Hirayama, Norio Sugita, Toshio Takada, Katsunori Fujimoto +1 more | 1989-07-25 |
| 4806429 | Plate-like barium ferrite particles suitable for use in magnetic recording and process for producing the same | Norimichi Nagai, Akihiko Hirayama, Norio Sugita, Toshio Takada, Katsunori Fujimoto +1 more | 1989-02-21 |
| 4781981 | Plate-like magnetoplumbite ferrite particles for magnetic recording and process for producing the same | Tsutomu Katamoto, Norimichi Nagai, Yasutaka Ota, Katsunori Fujimoto, Akihiko Hirayama | 1988-11-01 |
| 4752407 | Process for producing plate-like barium ferrite particles | Norimichi Nagai, Katsunori Fujimoto, Yasutaka Ota, Toshio Takada | 1988-06-21 |
| 4698182 | Hexagonal plate-like barium ferrite particles for magnetic recording and process for producing the same | Norimichi Nagai, Nanao Horiishi, Toshio Takada | 1987-10-06 |
| 4585568 | Plate-like barium ferrite particles for magnetic recording and process for producing the same | Norimichi Nagai, Nanao Horiishi, Toshio Takada | 1986-04-29 |
| 4584242 | Plate-like barium ferrite particles for magnetic recording and process for producing the same | Norimichi Nagai, Norio Sugita, Nanao Horiishi, Toshio Takada | 1986-04-22 |
| 4561988 | Process for production of plate-like barium ferrite particles for magnetic recording | Norimichi Nagai, Nanao Horiishi, Toshio Takada | 1985-12-31 |
| 4548801 | Plate-like barium ferrite particles for use in magnetic recording and process for producing the same | Norimichi Nagai, Nanao Horiishi, Toshio Takada | 1985-10-22 |
| 4539129 | Barium ferrite particles and process for producing said particles | Norimichi Nagai, Nanao Horiishi, Toshio Takada | 1985-09-03 |
| 4529524 | Process for producing plate-like barium ferrite particles for magnetic recording | Norimichi Nagai, Nanao Horiishi, Toshio Takada | 1985-07-16 |