Michael Birkelund
19Patents
5h-index
14Co-inventors
63Inventor score
Filing activity: Jun 14, 2000 → Jan 24, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD697587S1 | Expansion valve | General | 24 | Active |
| USD692983S1 | Expansion valve | General | 20 | Active |
| US6293513A | Servo-controlled magnetic valve | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US8689582B2 | Refrigeration system | Mechanical Engineering; Lighting; Heating | 14 | Active |
| US6459348B1 | Electromagnetic actuator | Electricity | 7 | Expired |
| US8434734B2 | Electromagnetic actuator and valve | Electricity | 5 | Active |
| US6955331B2 | Axial valve | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US9416890B2 | Flow control valve and a method of assembling a flow control valve | Emerging Cross-Sectional Technologies | 5 | Active |
| US10443753B2 | Shape memory alloy actuator for valve for a vapour compression system | Emerging Cross-Sectional Technologies | 4 | Active |
| US10197314B2 | Electronic expansion valve and methods for calibrating an electronic expansion valve | Emerging Cross-Sectional Technologies | 3 | Active |
| US8066256B2 | Valve actuator assembly | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US10082219B2 | Solenoid valve | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US10816015B2 | Ejector arrangement | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10571156B2 | Self-regulating valve for a vapour compression system | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10663077B2 | Solenoid valve | Emerging Cross-Sectional Technologies | 1 | Active |
| US9683673B2 | Magnetic valve with a one piece housing | Emerging Cross-Sectional Technologies | 1 | Active |
| US9360027B2 | Proportional control valve | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11976747B2 | Compressor unit with a damped axial check valve for a discharge outlet | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10253788B2 | Ejector arrangement | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.