Inventor · disambiguated record
Wolfgang Witz
Also filed as: WITZ WOLFGANG
12 granted patents·1 pending application·197 citations·filing 1978–2013
91Inventor score
Top patents by PatentIndex Score
13 records- 0187US4753546APressure balanced stylographic penKOH I NOOR RAPIDOGRAPH·Filed 1981·Granted Jun 28, 1988·52 cites·8 claims
- 0285US7037015B1Roller ball pen for pigmented inksCHARTPAK INC·Filed 2005·Granted May 2, 2006·16 cites·20 claims
- 0384US5420615AUnitary body plotter penKOH I NOOR INC·Filed 1993·Granted May 30, 1995·61 cites·8 claims
- 0484USD257857SDrawing penKOH I NOOR RAPIDOGRAPH·Filed 1978·Granted Jan 13, 1981·20 cites·1 claims
- 0581US8485749B2Ink delivery systemsOREM CHRISTOPHER P·Filed 2010·Granted Jul 16, 2013·4 cites·7 claims
- 0675US6695517B2Free ink systemSANFORD LP·Filed 2002·Granted Feb 24, 2004·13 cites·10 claims
- 0772US6322269B1Free ink systemSANFORD LP·Filed 2000·Granted Nov 27, 2001·14 cites·24 claims
- 0865US6632041B1Free ink systemSANFORD LP·Filed 2001·Granted Oct 14, 2003·9 cites·24 claims
- 0960US9114662B2Ink-delivery systemsCRAYOLA LLC·Filed 2013·Granted Aug 25, 2015·0 cites·7 claims
- 1059US9156304B2Ink-delivery systemsCRAYOLA LLC·Filed 2013·Granted Oct 13, 2015·0 cites·6 claims
- 1156US2007110506A1Capillary dispenserCONOPCO INC DBA UNILEVER·Filed 2006·Application pending·0 cites
- 1250US7101104B2Free ink systemSANFORD LP·Filed 2003·Granted Sep 5, 2006·3 cites·17 claims
- 1328US5734400AMethod and apparatus for refilling ink jet unit printer cartridgesFiled 1995·Granted Mar 31, 1998·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →