Eric R. Johnson
12Patents
8h-index
15Co-inventors
69Inventor score
Filing activity: Feb 22, 1982 → Jun 20, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6750952B2 | Apparatus for preforming measurement of a dimension of a test mark for semiconductor processing | Physics | 42 | Expired |
| US4430146A | Belt splicing apparatus and method and splice formed thereby | Performing Operations; Transporting | 25 | Expired |
| US6094256A | Method for forming a critical dimension test structure and its use | Physics | 19 | Expired |
| US8710973B2 | Automatic engine oil life determination with a factor for oil quality | Mechanical Engineering; Lighting; Heating | 15 | Active |
| US7395590B2 | Method for assembling a frame assembly for a chair | Emerging Cross-Sectional Technologies | 11 | Active |
| US8016516B2 | Vehicle-mounted pothole patching apparatus | Fixed Constructions | 10 | Active |
| US7461442B2 | Assembly apparatus and process for a chair back | Emerging Cross-Sectional Technologies | 10 | Active |
| US6449031B1 | Method for use of a critical dimensional test structure | Physics | 10 | Expired |
| US8468982B2 | Systems and methods for dispensing oil and fuel additives | Emerging Cross-Sectional Technologies | 6 | Active |
| US6538753B2 | Method and apparatus for dimension measurement of a pattern formed by lithographic exposure tools | Physics | 4 | Expired |
| US4958415A | Connector for lateral cable of tire chains | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9388716B2 | Systems and methods for accurately compensating for a change in amount of unwanted fluid diluted in engine oil resulting from a recent long trip | Mechanical Engineering; Lighting; Heating | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.