Harold Van Aken
13Patents
9h-index
14Co-inventors
69Inventor score
Filing activity: Apr 23, 1986 → Jun 7, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5319437A | Handheld portable spectrophotometer | Physics | 91 | Expired |
| US5268749A | Apparatus and method for providing uniform illumination of a sample plane | Physics | 70 | Expired |
| US6043894A | Method for maintaining uniformity among color measuring instruments | Physics | 51 | Expired |
| US6181418A | Concentric spectrometer | Physics | 51 | Expired |
| US5483339A | Spectrophotometer and radiometric measurement apparatus | Physics | 29 | Expired |
| US4770530A | Remote spectrophotometer | Physics | 26 | Expired |
| US6424413B1 | Multi-channel integrating sphere | Physics | 19 | Expired |
| US6559944B1 | Method for maintaining uniformity among color measuring instruments | Physics | 16 | Expired |
| USD338417S | Portable spectrophotometer | General | 11 | Expired |
| US5179423A | Gain stabilized self-scanning photo-diode array | Physics | 7 | Expired |
| US7280118B2 | Process for the production of a color palette | Physics | 4 | Expired |
| US7116336B2 | System and method for transforming color measurement data | Physics | 3 | Expired |
| US8446585B2 | Optical assemblies for a color measurement instrument | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.