Inventor · disambiguated record

Johannes Opfermann

Also filed as: OPFERMANN JOHANNES

3 granted patents·27 citations·filing 1974–2003

69Inventor score

Technology areasG03G G01N

Files withPENTACON DRESDEN VEB2 NETZSCH GERAETEBAU GMBH1

Top patents by PatentIndex Score

3 records

0164US3992203APolyphenylenevinylene photoconductor composition sensitized with a 1,4-bis (styryl) benzene derivativePENTACON DRESDEN VEB·Filed 1975·Granted Nov 16, 1976·14 cites·3 claims
0259US7038209B2Device for detecting thermal conductivity by means of optical pulsesNETZSCH GERAETEBAU GMBH·Filed 2003·Granted May 2, 2006·5 cites·12 claims
0354US3966470APhoto-conductive coating containing Ge, S, and Pb or SnPENTACON DRESDEN VEB·Filed 1974·Granted Jun 29, 1976·8 cites·2 claims

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