Robert DeLong
9Patents
6h-index
8Co-inventors
56Inventor score
Filing activity: Jan 29, 1990 → May 23, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7575413B2 | Abrasion resistant pump thrust bearing | Mechanical Engineering; Lighting; Heating | 34 | Active |
| US5167476A | Collet and tool assembly | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7086294B2 | Retrievable downhole flow meter | Physics | 18 | Expired |
| US5667314A | Horizontal thrust bearing assembly | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6779608B2 | Surface pump assembly | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4990038A | Rotationally and axially restrained drill bit and chuck assembly | Emerging Cross-Sectional Technologies | 14 | Expired |
| US8721181B2 | Keyless bearing sleeve for subterranean applications | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US11365619B2 | Variable width sand bridge inducer | Fixed Constructions | 1 | Active |
| US11643917B2 | Variable width sand bridge inducer | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.