| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 47 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nishikawa Asataro | 43 |
| #2 | Hirota Shoji | 12 |
| #3 | Miyoshi Shoji | 11 |
| #4 | Kadota Yukitane | 7 |
| #5 | Uchiyama Hiroshi | 7 |
| #6 | Kotani Keisuke | 5 |
| #7 | Hatakeyama Shotaro | 3 |
| #8 | Kato Takaharu | 2 |
| #9 | Watanabe Takeshi | 2 |
| #10 | Abe Kazuo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2020142163A | Filter support device | |
| JP2020006334A | Filter frame with flange | |
| JP2019063739A | Filter device | |
| JP2018130684A | Filter device | |
| JP2018122223A | Filter device and filter pressing unit used for the same | |
| JP2018103112A | Filter unit | |
| JP2018089574A | Dust collection filter | |
| JP2016034617A | filter | |
| JP2016016394A | Filter device | |
| JP2016014500A | filter | |
| JP2015229156A | filter | |
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| JP2013173079A | Chemical filter | |
| JP2012166148A | Dust removal/deodorization filter apparatus | |
| JP2011067263A | Dust removing deodorant filter | |
| JP2010119908A | Air filter | |
| JP2010088993A | Air filter | |
| JP2007185638A | Bag filter | |
| JP2006159107A | Filter fixing structure | |
| JP2006026518A | Air filter |