Yuji Ikegami
17Patents
4h-index
43Co-inventors
60Inventor score
Filing activity: Nov 18, 1986 → Sep 9, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4677252A | Circuit board | Electricity | 24 | Expired |
| US6741391B1 | Three-dimensional object observing microscope | Physics | 14 | Expired |
| US5002923A | Catalyst support for catalytic reactors | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5303117A | Electrostatic positioner | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5480608A | Ferritic stainless steel having an excellent oxidation resistance | Chemistry; Metallurgy | 4 | Expired |
| US5017544A | Production process of ferrite stainless steel covered with oxide whisker | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4987000A | Mechanical plating process | Performing Operations; Transporting | 3 | Expired |
| US6483118B2 | Positron source, method of preparing the same, and automated system for supplying the same | Physics | 3 | Expired |
| US5055145A | Production process of ferrite stainless steel covered with oxide whisker | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5686044A | Austenitic stainless steels for press forming | Chemistry; Metallurgy | 2 | Expired |
| US8737227B2 | Packet transmission device, memory control circuit, and packet transmission method | Electricity | 1 | Active |
| US6289071A | Positron source, method of preparing the same and automated system for supplying the same | Physics | 1 | Expired |
| US11588550B2 | Optical transmission device and optical transmission system | Electricity | 0 | Active |
| US12047115B2 | Polarization variation monitoring system and polarization variation monitoring method | Electricity | 0 | Active |
| US8703047B2 | Clothing ornament made from a high-Mn austenitic stainless steel | Chemistry; Metallurgy | 0 | Active |
| US9528173B2 | High-Mn austenitic stainless steel and a producing method of high-Mn austenitic stainless steel sheet | Chemistry; Metallurgy | 0 | Active |
| US11595139B2 | Device and method for estimating communication quality | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.