Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10879791 | DC/DC resonant converters and power factor correction using resonant converters, and corresponding control methods | Reinhold Elferich, David Llewellyn John, Johannes Hubertus Gerardus Op Het Veld | 2020-12-29 |
| 10734889 | DC/DC resonant converters and power factor correction using resonant converters, and corresponding control methods | Reinhold Elferich, David Llewellyn John, Johannes Hubertus Gerardus Op Het Veld | 2020-08-04 |
| 10454382 | Half bridge resonant converters, circuits using them, and corresponding control methods | Johannes Hubertus Gerardus Op Het Veld, David Llewellyn John, Reinhold Elferich | 2019-10-22 |
| 10447148 | DC/DC resonant converters and power factor correction using resonant converters, and corresponding control methods | Reinhold Elferich, David Llewellyn John, Johannes Hubertus Gerardus Op Het Veld | 2019-10-15 |
| 10447147 | DC/DC resonant converters and power factor correction using resonant converters, and corresponding control methods | Johannes Hubertus Gerardus Op Het Veld, David Llewellyn John, Reinhold Elferich | 2019-10-15 |
| 10418913 | DC/DC resonant converters and power factor correction using resonant converters, and corresponding control methods | David Liewellyyn John, Reinhold Elferich, Johannes Hubertus Gerardus Op Het Veld | 2019-09-17 |
| 10389260 | Half bridge resonant converters, circuits using them, and corresponding control methods | Johannes Hubertus Gerardus Op Het Veld, Dave Llewellyn John, Reinhold Elferich | 2019-08-20 |
| 10314135 | LED retrofit lamp having active over-current protection circuit | Borong Su, Bernhard Christiaan Van Dijk, Haimin Tao | 2019-06-04 |
| 10263510 | DC/DC resonant converters and power factor correction using resonant converters, and corresponding control methods | David Llewellyn John, Reinhold Elferich, Johannes Hubertus Gerardus Op Het Veld | 2019-04-16 |
| 9526133 | LED retrofit lamp with shunt capacitors across rectifier diodes for use with a ballast | Haimin Tao | 2016-12-20 |
| 9516709 | Driver circuit between fluorescent ballast and LED | Haimin Tao | 2016-12-06 |
| 9316383 | LED lighting device with temperature dependent output stabilizer | Berend Jan Willem Ter Weeme | 2016-04-19 |
| 9253849 | LED lighting device with incandescent lamp color temperature behavior | Berend Jan Willem Ter Weeme, Theo Gerrit Zijlman, Gazi Akdag, Erik MartinusHubertus Petrus Van Dijk, Paul Johannes Marie Julicher +1 more | 2016-02-02 |
| 9095023 | LED retrofit lamp | Carsten Deppe, Georg Sauerlander, Harald Josef Günther Radermacher, Haimin Tao | 2015-07-28 |
| 8917020 | Tubelamp retrofit pin safety implementation using existing ballast and fixture | — | 2014-12-23 |
| 8587205 | LED lighting with incandescent lamp color temperature behavior | Berend Jan Willem Ter Weeme, Theo Gerrit Zijlman, Gazi Akdag, Erik Martinus Hubertus Petrus Van Dijk, Paul Johannes Marie Julicher +1 more | 2013-11-19 |
| 7760169 | Display device | Andrea Giraldo, Mark Thomas Johnson, Remco Los | 2010-07-20 |
| 7003210 | Display device comprising an optical waveguide plate and method of operating for the same | Geert F. G. Depovere, Sebastiaan de Bont | 2006-02-21 |