Johan Richard Schmidt

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Leiden, NL

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Patents Grantslast 30 patents

Information Patent Grant
Information system for road traffic
- Patent number 6,466,139
- Issue date Oct 15, 2002
- Koninklijke KPN N.V.
- Johan Richard Schmidt
- G08 - SIGNALLING
Information Patent Grant
Active tag having one diode for modulation and demodulation
- Patent number 5,826,175
- Issue date Oct 20, 1998
- Koninklijke PTT Nederland N.V.
- Johan Richard Schmidt
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Service mediator system for vehicles and vehicle users in a traffic...
- Publication number 20030052796
- Publication date Mar 20, 2003
- Koninklijke KPN N.V.
- Johan Richard Schmidt
- G01 - MEASURING TESTING