Individual holder
ZWEIG LEON A
US·3 granted patents·37 citations·filing 1989–1990
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0158US5054394AIsopropyl alcohol-free catalytic fountain solution concentrate and method for introducing a catalytic agent into lithographic printing inkZWEIG LEON A·Filed 1990·Granted Oct 8, 1991·22 cites·33 claims
- 0241US4982661AMethod of infusing catalytic cross-linking agents into lithographic printing inkZWEIG LEON A·Filed 1989·Granted Jan 8, 1991·10 cites·8 claims
- 0331US4906296ACatalytic fountain solutionZWEIG LEON A·Filed 1989·Granted Mar 6, 1990·5 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →