David B. Stein
8Patents
5h-index
5Co-inventors
56Inventor score
Filing activity: Mar 22, 1985 → Apr 18, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5041042A | Flying bubble toy | Human Necessities | 26 | Expired |
| US5080623A | Flying bubble toy utilizing apertured strip | Human Necessities | 20 | Expired |
| US4654017A | Apparatus for forming and controlling large-volume bubbles | Human Necessities | 15 | Expired |
| US6457534B1 | Method of reducing pipe fatigue by eliminating short movements | Fixed Constructions | 12 | Expired |
| US9387840B1 | Multi-thread emergency park brake system | Performing Operations; Transporting | 11 | Active |
| US5002512A | Apparatus for forming and controlling large-volume bubbles | Human Necessities | 2 | Expired |
| US10518758B2 | Emergency park brake system | Performing Operations; Transporting | 0 | Active |
| US10259571B2 | Electrically controlled park and emergency valve assembly | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.