Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12134567 | Ferrite powder and method for producing same | Takashi Kojima | 2024-11-05 |
| 12119151 | Ferrite powder and method of producing the same | Takashi Kojima, Takao Sugiura, Sho KUWAHARA, Satomi KONNO, Tadashi TSUDUKI | 2024-10-15 |
| 11952286 | Mn ferrite powder, resin composition, electromagnetic wave shielding material, electronic material, and electronic component | Takashi Kojima, Kazutaka ISHII, Tetsuya Igarashi, Sho KUWAHARA | 2024-04-09 |
| 11651881 | Mn—Zn ferrite particles, resin molded body, soft magnetic mixed powder, and magnetic core | Takashi Kojima, Kazutaka ISHII, Takao Sugiura, Tetsuya Igarashi | 2023-05-16 |
| 11572926 | Iron oxide powder for brake friction material | Takashi Kojima | 2023-02-07 |
| 11542174 | Ferrite particles, resin compositions and electromagnetic wave shielding material | Takashi Kojima, Kazutaka ISHII, Takao Sugiura, Tetsuya Igarashi | 2023-01-03 |
| 11521768 | Ferrite powder, resin composition, and molded body | Kazutaka ISHII, Takao Sugiura, Takashi Kojima | 2022-12-06 |
| 11359689 | Iron oxide powder for brake friction material | Takashi Kojima | 2022-06-14 |
| 11072537 | Ferrite powder, resin composition, and molded article | Tetsuya Igarashi | 2021-07-27 |
| 11032955 | Ferrite powder, resin composition, electromagnetic shielding material, electronic circuit substrate, electronic circuit component, and electronic device housing | Tetsuya Igarashi | 2021-06-08 |
| 11014826 | Ferrite particles, resin composition and resin film | Takashi Kojima, Kazutaka ISHII, Takao Sugiura, Tetsuya Igarashi | 2021-05-25 |
| 10919779 | Iron oxide powder for brake friction material | Takashi Kojima | 2021-02-16 |
| 10825593 | Ni—Zn—Cu ferrite particle, resin composition, and resin molding | Takashi Kojima, Kazutaka ISHII, Takao Sugiura, Tetsuya Igarashi | 2020-11-03 |
| 10775711 | Ferrite carrier core material for electrophotographic developer, ferrite carrier for electrophotographic developer, electrophotographic developer, and method for manufacturing ferrite carrier core material for electrophotographic developer | Takao Sugiura, Kazutaka ISHII | 2020-09-15 |
| 10603614 | Ferrite particles having outer shell structure used for filtering medium | Takao Sugiura | 2020-03-31 |
| 10593454 | Spherical ferrite particles in nano-size and method of manufacturing same | Tetsuya Igarashi | 2020-03-17 |
| 10585369 | Ferrite particle having outer shell structure | Takao Sugiura | 2020-03-10 |
| 10564561 | Ferrite carrier core material for electrophotographic developer, ferrite carrier for electrophotographic developer, electrophotographic developer, and method for manufacturing ferrite carrier core material for electrophotographic developer | Takao Sugiura, Kazutaka ISHII | 2020-02-18 |
| 10501333 | Spherical ferrite powder, resin compound including spherical ferrite powder, and molded product made of resin compound | Tetsuya Igarashi, Akio Takahashi | 2019-12-10 |
| 10258970 | Ferrite particles provided with outer shell structure for catalyst supporting medium | Takao Sugiura | 2019-04-16 |
| 9372426 | Ferrite particle having outer shell structure, ferrite carrier core material for electrophotographic developer, and electrophotographic developer | — | 2016-06-21 |
| 9201329 | Porous ferrite core material for electrophotographic developer, resin-coated ferrite carrier and electrophotographic developer using the ferrite carrier | Makoto Ishikawa, Masashi Aoki | 2015-12-01 |
| 9081318 | Ferrite carrier core material and ferrite carrier for electrophotographic developer, methods for manufacturing these, and electrographic developer using the ferrite carrier | Tomoyuki Suwa, Toru Iwata | 2015-07-14 |
| 8895218 | Carrier core material and carrier for electrophotographic developer and process for producing the same, and electrophotographic developer using the carrier | Takashi Kojima, Toru Iwata | 2014-11-25 |
| 8728699 | Porous ferrite core material for electrophotographic developer, resin-filled ferrite carrier and electrophotographic developer using the ferrite carrier | Toru Iwata | 2014-05-20 |