John E. Sheaffer
28Patents
15h-index
19Co-inventors
74Inventor score
Filing activity: Jan 13, 1989 → May 18, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5924384A | Animal cage assembly and combination water bottle holder and feeder | Human Necessities | 64 | Expired |
| US5954013A | Ventilated cage and rack system | Performing Operations; Transporting | 50 | Expired |
| US6158387A | Ventilated cage and rack system | Performing Operations; Transporting | 43 | Expired |
| US5694885A | Animal feeder with perch assembly | Human Necessities | 42 | Expired |
| US5349923A | Ventilated cage and open rack system | Human Necessities | 39 | Expired |
| US6295950A | Filter cap for an animal cage | Human Necessities | 36 | Expired |
| US5165362A | Ventilated cage and open rack system | Human Necessities | 35 | Expired |
| US6227146A | Filter top for rodent cage | Performing Operations; Transporting | 34 | Expired |
| US6341581B1 | Multispecies rodent cage | Performing Operations; Transporting | 31 | Expired |
| US4989545A | Ventilated cage and open rack system | Human Necessities | 23 | Expired |
| US6041741A | Multispecies rodent cage | Performing Operations; Transporting | 23 | Expired |
| US5042429A | Ventilated cage and rack system | Human Necessities | 22 | Expired |
| US6336427B1 | Feeder assembly for use in a cage | Performing Operations; Transporting | 21 | Expired |
| US5097750A | Waste management disposal system | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5975024A | Cage for receiving a feeder | Human Necessities | 18 | Expired |
| US5950567A | Multiple dosage feeder for animal cage | Human Necessities | 11 | Expired |
| USD420772S | Water bottle | General | 11 | Expired |
| USD397526S | Feeder for an animal cage | General | 10 | Expired |
| US6029698A | Air regulator valve for ventilated cage and rack system | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5311836A | Ventilated cage and open rack system | Human Necessities | 8 | Expired |
| USD403130S | Bottle | General | 4 | Expired |
| US5048460A | Modular animal kennel | Human Necessities | 4 | Expired |
| US5735233A | Animal cage rack locking mechanism | Human Necessities | 3 | Expired |
| US6336425B1 | Multispecies rodent cage | Performing Operations; Transporting | 3 | Expired |
| USD379683S | Wire bar lid for an animal cage | General | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.