| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 17 | |
| #2 | United States | 4 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | Philippines | 3 | |
| #5 | Germany | 2 | |
| #6 | United Kingdom | 1 | |
| #7 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Chemical or physical processes | |
| #3 | Climate change adaptation technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kuwajima Soichi | 18 |
| #2 | Saeki Takeo | 4 |
| #3 | Kuwajima Souichi | 4 |
| #4 | Fujii Shiro | 3 |
| #5 | Kawakami Tatsumi | 2 |
| #6 | Sasaki Shigeru | 2 |
| #7 | Kuwajima S | 2 |
| #8 | Onda Isamu | 1 |
| #9 | Takada Kiyoshi | 1 |
| #10 | Sakamoto Naojiro | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPH0994411A | Filter element | |
| JPH0852313A | Fitting structure of ceramic element for high temperature | |
| JPH07313823A | Filter medium | |
| JPH01317516A | Dust collector | |
| JPS63116712A | Separating and drying apparatus | |
| JPS6362516A | Filtration device | |
| JPS6331515A | Filtering method | |
| US4645596A | Filter apparatus | |
| JPS6219217A | Filter element in filtration device | |
| JPS61101218A | Filtering method | |
| US4522719A | Filter with a tubular filter element | |
| JPS56100615A | Assembling device of filter element | |
| JPS5691821A | Filtering device | |
| JPS5670812A | Filter material | |
| JPS54158766A | Filter | |
| JPS5371375A | Filter for high pressure gas | |
| JPS526170A | Filter plate | |
| JPS51137170A | Filter housing | |
| JPS51142166A | Filter |