Yoshihiro Nagaoka
33Patents
8h-index
68Co-inventors
78Inventor score
Filing activity: Oct 17, 1994 → Dec 2, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5595473A | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6197255A | Chemical analyzing apparatus | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7727472B2 | Chemical analysis apparatus and chemical analysis cartridge | Emerging Cross-Sectional Technologies | 14 | Active |
| US7384602B2 | Chemical analysis apparatus and genetic diagnostic apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US9128071B2 | Liquid mixing device and liquid chromatograph | Physics | 9 | Active |
| US6568904B1 | Fluidal machine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7937990B2 | Liquid chromatograph and separation column | Physics | 8 | Active |
| US5857834A | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US6162015A | Centrifugal type fluid machine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6371724B1 | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7678576B2 | Chemical analysis apparatus and chemical analysis cartridge | Emerging Cross-Sectional Technologies | 7 | Active |
| US6290460A | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5971705A | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US10364900B2 | Fluid switching valve and liquid chromatograph apparatus using the same | Physics | 5 | Active |
| US7662340B2 | Extractor chemical analyzer and chemical analyzing method | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6500388B1 | Automatically analyzing apparatus | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7901573B2 | Separation column and liquid chromatography apparatus using the same | Physics | 5 | Active |
| US6139266A | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6364607B2 | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6312222A | Centrifugal fluid machine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US8496819B2 | Separation column for liquid chromatograph apparatus and liquid chromatograph apparatus using thereof | Physics | 2 | Active |
| US6749397B2 | Fluidal machine | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US7273702B2 | Apparatus for purifying nucleic acid and method of purifying nucleic acid | Physics | 1 | Expired |
| US7811451B2 | Separation column and liquid chromatograph using the same | Physics | 1 | Active |
| US8551423B2 | Liquid supply device using check valve and reactive liquid chromatography system | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.