Kenji Iwai
21Patents
10h-index
53Co-inventors
78Inventor score
Filing activity: Feb 5, 1981 → Jul 30, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7332992B2 | Transformer | Electricity | 51 | Active |
| US6181922A | Attenuator unit, step attenuator, and electronic apparatus | Electricity | 51 | Expired |
| USD521166S1 | Flash light | General | 49 | Expired |
| US5690035A | Vibration-damping material, its manufacturing method, and structural section for transport vehicle | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5145891A | Polypropylene resin composition | Chemistry; Metallurgy | 21 | Expired |
| US5331532A | High voltage regulating circuit | Electricity | 14 | Expired |
| US6324081A | Switching power source apparatus | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4825522A | Method of making heat resistant heavy-duty components of a turbine by superplasticity forging wherein different alloys are junctioned | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5145892A | Polypropylene resin composition | Chemistry; Metallurgy | 11 | Expired |
| US6112851A | Partition wall panel | Fixed Constructions | 10 | Expired |
| US5800888A | Heat bonded type vibration-damping resin for structural member vibration-damping structure | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5756942A | Vibration-damping section with sound absorbing material | Fixed Constructions | 10 | Expired |
| US5895538A | Method of manufacturing and using vibration-damping material | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4716459A | Fatigue crack position detection apparatus | Physics | 7 | Expired |
| US4475963A | Method for postweld heat treatment | Chemistry; Metallurgy | 7 | Expired |
| US8478334B2 | Wireless terminal device | Electricity | 7 | Active |
| US8548401B2 | Amplifier circuit, control method for supplying power to amplifier circuit, and transmission device | Electricity | 3 | Active |
| US7696702B2 | Transformer, backlight apparatus, and display apparatus | Electricity | 2 | Active |
| US8072148B2 | Fluorescent lamp driving device and liquid crystal display apparatus using the same | Physics | 1 | Active |
| US9130522B2 | Matching device, transmitting amplifier, and wireless communication device | Electricity | 0 | Active |
| US4638030A | Polypropylene interior parts for autocars | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.