Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12302769 | Casimir power cell | — | 2025-05-13 |
| 5813192 | Bag discharge device | — | 1998-09-29 |
| 5649801 | Device and method for unloading large bulk bags | — | 1997-07-22 |
| 5277014 | Bag discharge station | — | 1994-01-11 |
| 5055205 | Pressurized continuous operating rotary drum filter and method | — | 1991-10-08 |
| 4839057 | Water treatment system | — | 1989-06-13 |
| 4742852 | Feeder | — | 1988-05-10 |
| 4681682 | Air flotation clarifier | Alex J. Doncer | 1987-07-21 |
| 4511468 | Rotary vacuum pre-coat filter apparatus | — | 1985-04-16 |
| 4510055 | Filter aid | — | 1985-04-09 |
| 4510061 | Method of filtering | — | 1985-04-09 |
| 4477939 | Removable sludge cleaner for tanks | Alex J. Doncer | 1984-10-23 |
| 4476018 | Field assembled clarifier | Alex J. Doncer | 1984-10-09 |
| 4361488 | Liquid separating and recycling | Alexander J. Doncer, Jr. | 1982-11-30 |
| 4257900 | Method of clarifying liquids | Alexander J. Doncer, Jr. | 1981-03-24 |
| 4193871 | Clarifier | Alexander J. Doncer, Jr. | 1980-03-18 |