Assignee
NORSTONE INC
US·3 granted patents·27 citations·filing 1991–2015
Top patents by PatentIndex Score
3 records- 0168US9381478B2Rotary impeller for mixing and grinding materialsNORSTONE INC·Filed 2015·Granted Jul 5, 2016·2 cites·9 claims
- 0257US5201635AComposite polyurethane mixing impellerNORSTONE INC·Filed 1991·Granted Apr 13, 1993·19 cites·13 claims
- 0335US5888440AMethod for manufacturing mixing impellerNORSTONE INC·Filed 1993·Granted Mar 30, 1999·6 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →