Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827757 | Magnetite-iron based composite powder, magnetite-iron based powder mixture, method for producing the same, method for remedying polluted soil, water or gases and electromagnetic wave absorber | Yukiko Ozaki, Satoshi Uenosono, Hiroki Nakamaru, Yukiko Nakamura, Shigeru Unami +1 more | 2004-12-07 |
| 6416592 | Electromagnetic steel sheet having excellent magnetic properties and production method thereof | Osamu Kondo, Akihiro Matsuzaki | 2002-07-09 |
| 6364962 | Electromagnetic steel sheet having excellent high-frequency magnetic properties and method | Takako Yamashita, Akihiro Matsuzaki, Osamu Kondo | 2002-04-02 |
| 6322638 | Electromagnetic steel sheet having excellent high-frequency magnetic properties | Takako Yamashita, Akihiro Matsuzaki, Osamu Kondo | 2001-11-27 |
| 6322639 | Magnetic steel sheet having excellent magnetic properties and method of producing the same | Akihiro Matsuzaki, Osamu Kondo, Takako Yamashita | 2001-11-27 |
| 6248185 | Electromagnetic steel sheet having excellent magnetic properties and production method thereof | Osamu Kondo, Akihiro Matsuzaki | 2001-06-19 |
| 6207103 | Fe-Cr-Si steel sheets having excellent corrosion resistance and method for manufacturing the same | Takako Yamashita, Akihiro Matsuzaki, Osamu Kondo | 2001-03-27 |
| 6162306 | Electromagnetic steel sheet having excellent high-frequency magnetic properities and method | Takako Yamashita, Akihiro Matsuzaki, Osamu Kondo | 2000-12-19 |
| 5476534 | Iron-based powder mixture and method | Kuniaki Ogura, Hiroyuki Ishikawa, Akio Sonobe, Yoshiaki Maeda, Toshiyuki MINEGISHI | 1995-12-19 |
| 5308702 | Iron-based powder composition for use in powder metallurgy, process for its production and process for producing iron-base sintered material | Osamu Furukimi, Koji Yano | 1994-05-03 |
| 5279640 | Method of making iron-based powder mixture | Kuniaki Ogura, Hiroyuki Ishikawa, Akio Sonobe, Yoshiaki Maeda, Toshiyuki MINEGISHI | 1994-01-18 |
| 5135566 | Iron base powder mixture and method | Ichio Sakuranda, Ritsuo Okabe, Takao Omura, Yoshisato Kiyota | 1992-08-04 |
| 5067979 | Sintered bodies and production process thereof | Yoshisato Kiyota, Junichi Ohta, Hiroshi Ohtsubo | 1991-11-26 |
| 4985309 | Alloyed steel powder for powder metallurgy | Kuniaki Ogura, Junichi Oota, Teruyoshi Abe | 1991-01-15 |
| 4971755 | Method for preparing powder metallurgical sintered product | Masaki Kawano, Kuniaki Ogura, Hiroshi Ohtsubo, Keisuke YOSHIMURA, Yoshiaki Maeda | 1990-11-20 |
| 4964907 | Sintered bodies and production process thereof | Yoshisato Kiyota, Junichi Ohta, Hiroshi Ohtsubo | 1990-10-23 |
| 4954171 | Composite alloy steel powder and sintered alloy steel | Osamu Furukimi, Kuniaki Ogura, Keiichi Maruta, Teruyoshi Abe, Ichio Sakurada | 1990-09-04 |
| 4946499 | Method of preparing iron base powder mixture for pm | Ichio Sakuranda, Ritsuo Okabe, Takao Omura, Yoshisato Kiyota | 1990-08-07 |
| 4824734 | Tin-containing iron base powder and process for making | — | 1989-04-25 |
| 4804409 | Alloy steel powder for powder metallurgy | Masaki Kawano, Kuniaki Ogura, Teruyoshi Abe | 1989-02-14 |
| 4643765 | Tin-containing ferrous composite powder and method of producing same and tin-containing sintered magnetic material | — | 1987-02-17 |
| 4561893 | Alloy steel powder for high strength sintered parts | — | 1985-12-31 |