Esa Virtanen
14Patents
7h-index
33Co-inventors
66Inventor score
Filing activity: Aug 11, 1992 → Jun 24, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5585038A | Conductive plastics material and a method for its preparation | Electricity | 26 | Expired |
| US5340499A | Electrically conductive compositions and methods for their preparation | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5585040A | Conductive plastics material and a method for its preparation | Electricity | 14 | Expired |
| US5531932A | Metal compound/protonic acid containing electrically conductive compositions and methods for their preparation | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8549924B2 | Pressure compensator | Electricity | 10 | Active |
| US10244650B2 | Pressure compensated subsea electrical system | Electricity | 8 | Active |
| US6479780B2 | Circuit breaker for disconnecting an electrical apparatus from electrical network | Electricity | 8 | Expired |
| US6456179B1 | Transformer | Electricity | 5 | Expired |
| US7141141B1 | Apparatus and method for determination and control of paper web qualities on a papermaking machine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US5507977A | Conducting plastic material and method of producing such material | Electricity | 2 | Expired |
| US12087486B2 | Static electrical device assembly comprising heat exchanger system | Electricity | 0 | Active |
| US9759241B2 | Pressure compensator | Emerging Cross-Sectional Technologies | 0 | Active |
| US10041507B2 | Subsea pressure compensation arrangement | Electricity | 0 | Active |
| US11705274B2 | Arrangement for overvoltage protection of subsea electrical apparatus | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.