Assignee
Inventors
- Jan Evert Van Der Werf (33 patents)
- Erik Roelof Loopstra (328 patents)
- Hans Meiling (14 patents)
- Johannes Hubertus Josephina Moors (92 patents)
- Martinus Hendrikus Antonius Leenders (126 patents)
US Patent 7492443 · Granted Feb 17, 2009