Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9691652 | Carrier device and ceramic member | Kaname Miwa, Jun Kurano | 2017-06-27 |
| 9276504 | Carrier device and ceramic member | Kaname Miwa, Jun Kurano | 2016-03-01 |
| 7029623 | Ceramic ball, ball bearing, motor having bearing, hard disk drive, polygon scanner, and method for manufacturing ceramic ball | — | 2006-04-18 |
| 6696376 | Zirconia containing ceramic ball, method for manufacturing same, ceramic ball bearing and check valve | Tetsuji Yogo | 2004-02-24 |
| 6589448 | Ceramic ball for bearing and ceramic ball bearing using the same | Tetsuji Yogo | 2003-07-08 |
| 6508591 | Conductive ceramic bearing ball, ball bearing, motor having bearing, hard disk drive, and polygon scanner | Tetsuji Yogo | 2003-01-21 |
| 6472075 | Sintered silicon nitride member and ceramic ball | — | 2002-10-29 |
| 6464906 | Method of manufacturing spherical bodies by rotation, spherical bodies made by the method and a powder composition for use in the method | Tetsuji Yogo | 2002-10-15 |
| 6315454 | Ceramic bearing ball | — | 2001-11-13 |
| 5994251 | Sintered ceramic mainly composed of alumina and a sintered ceramic part consisting of a sintered ceramic mainly composed of alumina | — | 1999-11-30 |
| 5887620 | Porous ceramic material and producing method of same, and valve unit | Yusuke Makino | 1999-03-30 |
| 5688728 | Porous ceramic material | Yusuke Makino | 1997-11-18 |
| 5600867 | Car kiln wheel having silicon nitride rotating members | Tetsuji Yogo | 1997-02-11 |