Kenichi Takagi
26Patents
6h-index
39Co-inventors
69Inventor score
Filing activity: May 27, 1987 → Dec 19, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4841197A | Double-chamber ion source | Electricity | 20 | Expired |
| US4894546A | Hollow cathode ion sources | Electricity | 14 | Expired |
| US7078172B1 | Substrate activation kit and method for detecting DNA and the like using the same | Physics | 13 | Expired |
| US5238481A | Heat resistant sintered hard alloy | Chemistry; Metallurgy | 12 | Expired |
| US7098121B2 | Method of forming a film of predetermined pattern on a surface as well as device manufactured by employing the same, and method of manufacturing device | Electricity | 9 | Expired |
| US7164455B2 | Device, manufacturing method thereof, and electronic instrument with the device | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7148148B2 | Mask forming and removing method, and semiconductor device, an electric circuit, a display module, a color filter and an emissive device manufactured by the same method | Chemistry; Metallurgy | 4 | Expired |
| US9270187B2 | Electric power conversion system | Electricity | 3 | Active |
| US7070701B2 | Manufacturing method of fine structure, optical element, integrated circuit, and electronic instrument | Electricity | 3 | Expired |
| US9209701B2 | Electric power conversion system | Electricity | 3 | Active |
| US9450499B2 | Electric power conversion circuit system | Electricity | 2 | Active |
| US8773177B2 | Drive circuit | Electricity | 2 | Active |
| US9742296B2 | Isolated DC-DC power conversion circuit system with circulating current reduction | Electricity | 2 | Active |
| US9660543B2 | Electric power conversion circuit system | Emerging Cross-Sectional Technologies | 2 | Active |
| US9882491B2 | Power supply system | Emerging Cross-Sectional Technologies | 1 | Active |
| US10340804B2 | Power supply circuit including converter and power supply system using the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US10097106B1 | Power converter | Emerging Cross-Sectional Technologies | 1 | Active |
| US9570995B2 | Magnetically coupled reactor and power converter | Electricity | 1 | Active |
| US10020748B2 | Electric power conversion circuit | Emerging Cross-Sectional Technologies | 1 | Active |
| US8336604B2 | Manufacturing method for a multi-channel copper tube, and manufacturing apparatus for the tube | Emerging Cross-Sectional Technologies | 1 | Active |
| US8851869B2 | Internal gear pump | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US9765773B2 | Pump having an inner and outer rotor | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8869874B2 | Manufacturing method for a multi-channel copper tube, and manufacturing apparatus for the tube | Emerging Cross-Sectional Technologies | 0 | Active |
| US8233868B2 | Radio receiver device | Physics | 0 | Active |
| US11462912B2 | Non-contact power transmission device, battery pack and power grid system in which said noncontact power transmission device is used, and power transmission method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.