Allan H. Willinger
63Patents
20h-index
12Co-inventors
81Inventor score
Filing activity: Jul 28, 1976 → Jun 23, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4512885A | Aquarium filter assembly | Human Necessities | 49 | Expired |
| US4783258A | Filter cartridge with reuseable framework | Human Necessities | 41 | Expired |
| US4842727A | Aquarium filter | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4735715A | Power unit for aquarium filter assembly | Human Necessities | 36 | Expired |
| US5053125A | Filter cartridge | Human Necessities | 35 | Expired |
| US5228986A | Aquarium power filter | Human Necessities | 33 | Expired |
| US4301767A | Holding clamp for an aquarium heater | Human Necessities | 32 | Expired |
| USD289914S | Filter housing for aquariums | General | 32 | Expired |
| US4622148A | Aquarium filter system | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5176824A | Aerobic aquarium filter chamber | Human Necessities | 30 | Expired |
| US4761227A | Self priming aquarium filter | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5052904A | Aquarium air pump | Human Necessities | 27 | Expired |
| US4602996A | Aquarium filter assembly | Human Necessities | 26 | Expired |
| US4997559A | Aquarium filter assembly with restricted pumping window | Human Necessities | 25 | Expired |
| US5098585A | Aquarium filter assembly | Human Necessities | 22 | Expired |
| US4369216A | Artificial aquarium plant | Human Necessities | 22 | Expired |
| US4186093A | Bottom aquarium filter | Human Necessities | 22 | Expired |
| US4880549A | Method of filtering in an aquarium tank with a filter envelope | Human Necessities | 22 | Expired |
| USD247436S | Aquarium air pump | General | 21 | Expired |
| USD353649S | Aquarium filter bag | General | 20 | Expired |
| US4265751A | External biological aquarium filter | Human Necessities | 19 | Expired |
| US5282961A | Floating impeller assembly | Human Necessities | 16 | Expired |
| US5034165A | Air stone | Performing Operations; Transporting | 16 | Expired |
| US5238367A | Impeller assembly for aquarium power filter | Human Necessities | 16 | Expired |
| US4699829A | Biological filtration plants | Human Necessities | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.