Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12053716 | Treatment apparatus for waste cleaning liquid and treatment method for waste cleaning liquid | Takahiro Tamura, Yotaro Nishijima, Nanri Fang | 2024-08-06 |
| 6589317 | Structured surface filtration media array | Zhiqun Zhang, Tien T. Wu, Brian E. Spiewak | 2003-07-08 |
| 6277176 | Moving filter device having filter elements with flow passages and method of filtering air | Ricardo Lira, Michael R. Harms | 2001-08-21 |
| 6099609 | Moving sorbent filter device | Ricardo Lira, Michael R. Harms | 2000-08-08 |
| 6099608 | Rotating filtration cartridge and blower for HVAC applications | Michael R. Harms, Ricardo Lira, James R. Larson | 2000-08-08 |
| 5336405 | Filter cartridge end cap assembly | Gregory H. C. Stephan | 1994-08-09 |
| 5332426 | Agglomerated activated carbon air filter | John C. Kostecki, Eric G. Graeve | 1994-07-26 |
| 4842739 | High surface area filter cartridge | — | 1989-06-27 |