Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9097154 | Production method of ceramic honeycomb filter | Toyohide Kumagae, Hirohisa Suwabe | 2015-08-04 |
| 8460589 | Method for producing ceramic honeycomb filter | — | 2013-06-11 |
| 8268401 | Method for producing ceramic honeycomb structure | — | 2012-09-18 |
| 7892309 | Production method of honeycomb filter and honeycomb filter | Shunji Okazaki, Yasuhiko Otsubo, Hirohisa Suwabe, Toshitaka Ishizawa | 2011-02-22 |
| 7691167 | Ceramic honeycomb filter, its production method, and plugging material for ceramic honeycomb filter | — | 2010-04-06 |
| 6827754 | Ceramic honeycomb filter | Hirohisa Suwabe, Yasuhiko Otsubo, Hiroshi Funabashi, Keiichi Nakagome, Makoto Tsujita +1 more | 2004-12-07 |