Per Hedlund
8Patents
4h-index
5Co-inventors
46Inventor score
Filing activity: Oct 15, 1990 → Jul 19, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5482505A | Arrangement for extraction of harmful gases from workplaces | Performing Operations; Transporting | 9 | Expired |
| USD329081S | Mobile electrostatic air filter for use in welding projects | General | 5 | Expired |
| US6158684A | Reeling device for hoses and/or cables | Emerging Cross-Sectional Technologies | 4 | Expired |
| USD578200S1 | Hood for use when extracting gases/fumes | General | 4 | Expired |
| USD575378S1 | Joint for pipes to be used in arms for extraction of gases/fumes | General | 3 | Expired |
| USD589133S1 | Ventilation and air conditioning equipment unit | General | 3 | Expired |
| USD573707S1 | Arm for the extraction of gases/fumes | General | 0 | Expired |
| US6161788A | Reeling device | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.