Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10253624 | Methods of applications for a mass spectrometer in combination with a gas chromatograph | Ronald E. G. van Hal, Albert Ballard Andrews | 2019-04-09 |
| 10012633 | Fluid composition and reservoir analysis using gas chromatography | Adriaan Gisolf, Youxiang Zuo, Ronald E. G. van Hal | 2018-07-03 |
| 9932825 | Gas chromatograph mass spectrometer for downhole applications | Ronald E. G. van Hal, Albert Ballard Andrews | 2018-04-03 |
| 9664665 | Fluid composition and reservoir analysis using gas chromatography | Adriaan Gisolf, Youxiang Zuo, Ronald E. G. van Hal | 2017-05-30 |
| 9458715 | Determining the plus fraction of a gas chromatogram | Ronald E. G. van Hal, Youxiang Zuo, Adriaan Gisolf | 2016-10-04 |