Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10029661 | Cylinder device | Hiroshi Isono | 2018-07-24 |
| 9302663 | Hydraulic brake device for vehicle | Yosuke Yamasoe, Hiroshi Isono, Yasuji Mizutani | 2016-04-05 |
| 9211876 | Hydraulic brake device for vehicle | Hiroshi Isono | 2015-12-15 |
| 7255408 | Vacuum booster | Kaoru Tsubouchi, Nobuyuki Hirota, Tomoyasu Sakai | 2007-08-14 |
| 7014276 | Vacuum booster | Kaoru Tsubouchi, Nobuyuki Hirota, Tomoyasu Sakai | 2006-03-21 |
| 6955407 | Negative pressure type brake hydraulic pressure generating device | Kaoru Tsubouchi, Tomoyasu Sakai, Koichi Hashida, Haruo Arakawa | 2005-10-18 |
| 6755116 | Negative pressure type booster | Kaoru Tsubouchi, Nobuyuki Hirota | 2004-06-29 |
| 6575077 | Vacuum servo unit | Kaoru Tsubouchi | 2003-06-10 |
| 6446537 | Vacuum brake booster | Kaoru Tsubouchi | 2002-09-10 |
| 6397724 | Negative pressure type servo unit | Kaoru Tsubouchi, Nobuyuki Hirota | 2002-06-04 |
| 6367889 | Brake control device | Kaoru Tsubouchi | 2002-04-09 |
| 6345565 | Vacuum servo unit for vehicle brake systems | Kaoru Tsubouchi | 2002-02-12 |
| 6334383 | Vacuum servo apparatus | Kaoru Tsubouchi | 2002-01-01 |
| 6311606 | Vacuum servo unit for vehicle brake systems | Kaoru Tsubouchi | 2001-11-06 |
| RE37373 | Vacuum servo apparatus | Kaoru Tsubouchi | 2001-09-18 |
| 6212992 | Vacuum type brake booster for vehicle | Kaoru Tsubouchi, Nobuyuki Hirota, Minoru Watanabe, Yoichi Terasaki | 2001-04-10 |
| 6170382 | Negative-pressure booster | Kaoru Tsubouchi | 2001-01-09 |
| 6112637 | Negative pressure type booster | Kaoru Tsubouchi | 2000-09-05 |
| 6065388 | Vacuum type brake booster for vehicle | Kaoru Tsubouchi, Nobuyuki Hirota, Minoru Watanabe, Yoichi Terasaki | 2000-05-23 |
| 5890775 | Vacuum servo unit for a vehicle braking system | Kaoru Tsubouchi, Yoichi Terasaki | 1999-04-06 |
| 5857399 | Brake booster apparatus for a vehicle | Kaoru Tsubouchi | 1999-01-12 |
| 5845556 | Vacuum brake booster | Kaoru Tsubouchi, Hiroaki Aizawa | 1998-12-08 |
| 5845558 | Vacuum servo unit for a vehicle braking system | Kaoru Tsubouchi | 1998-12-08 |
| 5683147 | Vacuum servo apparatus | Kaoru Tsubouchi | 1997-11-04 |
| 5664479 | Tandem vacuum booster | — | 1997-09-09 |