Kenji Imura
53Patents
15h-index
26Co-inventors
84Inventor score
Filing activity: Oct 22, 1976 → Mar 1, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4446871A | Optical analyzer for measuring a construction ratio between components in the living tissue | Human Necessities | 156 | Expired |
| US4157708A | Eye fundus plethysmograph assembly | Human Necessities | 97 | Expired |
| US7339665B2 | Calibration source for calibrating spectroradiometer, calibration method using the same, and calibration system | Physics | 45 | Active |
| US7151600B2 | Calibration system for a spectral luminometer and a method for calibrating a spectral luminometer | Physics | 30 | Expired |
| US6707553B1 | Color measuring apparatus | Physics | 27 | Expired |
| US7697136B2 | Reflection characteristic measuring apparatus, and method for calibrating reflection characteristic measuring apparatus | Physics | 27 | Active |
| US5636015A | Measuring apparatus for measuring an optical property of a fluorescent sample | Physics | 22 | Expired |
| US8130371B2 | Method of calibrating reflection characteristic measuring apparatus for sheet specimen | Physics | 22 | Active |
| US6535278B1 | Apparatus and method for measuring spectral property of fluorescent sample | Physics | 20 | Expired |
| US5384641A | Color measuring instrument with multiple inputs of light | Physics | 19 | Expired |
| US6020959A | Apparatus and method for measuring spectral characteristics of fluorescent sample | Physics | 18 | Expired |
| US6876448B2 | Spectral characteristic measuring apparatus and method for correcting wavelength shift of spectral sensitivity in the apparatus | Physics | 16 | Expired |
| US5001657A | Radiation thermometer | Physics | 16 | Expired |
| US7006690B1 | Test chart color measuring system and a color output apparatus correcting system | Physics | 16 | Expired |
| US7262854B2 | Multi-angle colorimeter | Physics | 16 | Expired |
| US6088117A | Reflection characteristic measuring apparatus | Physics | 15 | Expired |
| US4914673A | Radiation thermometer | Physics | 13 | Expired |
| US4801212A | Optical system for radiation thermometer | Physics | 13 | Expired |
| US4664515A | Optical system of a radiation thermometer | Physics | 12 | Expired |
| US7286215B2 | Light measuring apparatus and a method for correcting non-linearity of a light measuring apparatus | Physics | 10 | Expired |
| US5914777A | Apparatus for and method of measuring a distribution of luminous intensity of light source | Physics | 9 | Expired |
| US5859709A | Optical characteristic measuring apparatus | Physics | 9 | Expired |
| US5956133A | Apparatus for measuring a reflection characteristic | Physics | 9 | Expired |
| US8288739B2 | Method and apparatus for measuring optical property of fluorescent sample | Physics | 8 | Active |
| US7675620B2 | Optical property measuring method and optical property measuring apparatus | Physics | 8 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.