Hiroki Kojima
11Patents
3h-index
21Co-inventors
60Inventor score
Filing activity: Oct 23, 1998 → Jul 1, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6248181A | Composition and method for hydrophilic treatment of aluminum or aluminum alloy | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6306226A | Process for surface-treating an aluminum-containing metal | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US6728526B2 | Fractional-N frequency synthesizer with multiple clocks having different timings | Electricity | 8 | Expired |
| US6900976B2 | Variable capacitor element and integrated circuit having variable capacitor element | Electricity | 3 | Expired |
| US11378738B2 | Optical fiber | Physics | 0 | Active |
| US12155212B2 | Power control system and device | Emerging Cross-Sectional Technologies | 0 | Active |
| US11878929B2 | Manufacturing apparatus and manufacturing method of porous glass base material | Chemistry; Metallurgy | 0 | Active |
| US12421156B2 | Method for manufacturing optical fiber glass preform | Chemistry; Metallurgy | 0 | Active |
| US11518704B2 | Fabrication method for porous glass base material for optical fiber | Chemistry; Metallurgy | 0 | Active |
| US10829405B2 | Method for producing porous glass deposit for optical fiber | Chemistry; Metallurgy | 0 | Active |
| US10166918B2 | Drive assisting apparatus | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.