Inventor · disambiguated record
Hans-Joachim Ritter
Also filed as: RITTER HANS-JOACHIM
3 granted patents·61 citations·filing 1978–1985
71Inventor score
Top patents by PatentIndex Score
3 records- 0176US4669617APen holder deviceKOH I NOOR RAPIDOGRAPH·Filed 1985·Granted Jun 2, 1987·40 cites·19 claims
- 0257US4548325ATechnical pen holderKOH I NOOR RAPIDOGRAPH·Filed 1984·Granted Oct 22, 1985·17 cites·3 claims
- 0333US4221496AWriting fluid cartridgeMESNE KOH I NOOR RAPIDOGRAPH I·Filed 1978·Granted Sep 9, 1980·4 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →