Assignee
WIETFELD CHRISTIAN
DE·3 granted patents·9 citations·filing 2011–2011
Top patents by PatentIndex Score
3 records- 0166US8917188B2Method for detecting and warning against wrong-way drivers, and wrong-way driver reporting and warning systemWIETFELD CHRISTIAN·Filed 2011·Granted Dec 23, 2014·6 cites·14 claims
- 0251US9374378B2Access method and communication system for accessing a protected communication serviceWIETFELD CHRISTIAN·Filed 2011·Granted Jun 21, 2016·1 cites·13 claims
- 0349US9035759B2Approach warning system and method for detecting the approach of moving objectsWIETFELD CHRISTIAN·Filed 2011·Granted May 19, 2015·2 cites·16 claims
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