John Underbrink
17Patents
9h-index
10Co-inventors
65Inventor score
Filing activity: Apr 29, 1991 → Mar 26, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6611972B2 | Sink with foldable faucet assembly and multiple-purpose support structure | Fixed Constructions | 50 | Expired |
| US5468199A | Sliding-handgrip amusement apparatus | Human Necessities | 26 | Expired |
| US7159252B2 | Folding sink | Fixed Constructions | 18 | Expired |
| USD504000S1 | Portable sink with foldable faucet | General | 18 | Expired |
| USD407569S | Support stool | General | 15 | Expired |
| USD489155S1 | Outdoor station with sink and foldable faucet | General | 13 | Expired |
| USD461941S1 | Serving cart with sink and foldable faucet | General | 12 | Expired |
| US5443012A | Playground carriage | Human Necessities | 12 | Expired |
| US5156507A | Expansible fastening device | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| USD461880S1 | Wall-mounted sink with foldable faucet | General | 9 | Expired |
| US7222557B2 | Ratcheting tool driver | Performing Operations; Transporting | 9 | Expired |
| USD474900S1 | Convertible table and easel | General | 7 | Expired |
| US7118514B2 | Playground equipment | Human Necessities | 6 | Expired |
| USD426586S | Toy beauty center | General | 3 | Expired |
| US8062142B2 | Collaborative play toy | Human Necessities | 2 | Active |
| US5816167A | Playground carriage | Human Necessities | 2 | Expired |
| US6044766A | Playground carriage | Human Necessities | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.