Inventor · disambiguated record
John Christianson
Also filed as: CHRISTIANSON JOHN · CHRISTIANSON JOHN R
25 granted patents·3 pending applications·234 citations·filing 1989–2024
96Inventor score
Files withMILWAUKEE ELECTRIC TOOL CORP12EMPIRE LEVEL MFG CORP10CHRISTIANSON JOHN3HARKEN INC2TARRENN CORP1
Top patents by PatentIndex Score
28 records- 0197US11346664B2Level including removable end capsMILWAUKEE ELECTRIC TOOL CORP·Filed 2020·Granted May 31, 2022·6 cites·20 claims
- 0295US11740082B2Level including removable end capsMILWAUKEE ELECTRIC TOOL CORP·Filed 2022·Granted Aug 29, 2023·2 cites·20 claims
- 0395US9909870B2Level including removable end capsMILWAUKEE ELECTRIC TOOL CORP·Filed 2015·Granted Mar 6, 2018·14 cites·16 claims
- 0492US8291605B2Box levelCHRISTIANSON JOHN·Filed 2010·Granted Oct 23, 2012·18 cites·9 claims
- 0590US11506491B2Vial with improved visibility for levelMILWAUKEE ELECTRIC TOOL CORP·Filed 2020·Granted Nov 22, 2022·2 cites·16 claims
- 0689US8413342B2Level with a magnet-mounting structureCHRISTIANSON JOHN·Filed 2011·Granted Apr 9, 2013·18 cites·20 claims
- 0788US10697770B2Level including removable end capsMILWAUKEE ELECTRIC TOOL CORP·Filed 2018·Granted Jun 30, 2020·4 cites·20 claims
- 0888US7832112B2Vial-mounting structureEMPIRE LEVEL MFG CORP·Filed 2008·Granted Nov 16, 2010·24 cites·19 claims
- 0987US10823561B2Vial with improved visibility for levelMILWAUKEE ELECTRIC TOOL CORP·Filed 2018·Granted Nov 3, 2020·4 cites·10 claims
- 1083US2024318960A1Vial with Improved Visibility for LevelMILWAUKEE ELECTRIC TOOL CORP·Filed 2024·Application pending·0 cites
- 1180US9347774B2Angular indicator toolMILWAUKEE ELECTRIC TOOL CORP·Filed 2014·Granted May 24, 2016·6 cites·26 claims
- 1280US8375591B2Box levelEMPIRE LEVEL MFG CORP·Filed 2010·Granted Feb 19, 2013·5 cites·17 claims
- 1379US12031845B2Vial with improved visibility for levelMILWAUKEE ELECTRIC TOOL CORP·Filed 2022·Granted Jul 9, 2024·0 cites·19 claims
- 1479US5067709AUnassisted lower torso strengthening and stretching deviceTARRENN CORP·Filed 1989·Granted Nov 26, 1991·61 cites·4 claims
- 1578US10281274B2Level and level-straightedge systemMILWAUKEE ELECTRIC TOOL CORP·Filed 2017·Granted May 7, 2019·3 cites·20 claims
- 1674USD628914STorpedo levelEMPIRE LEVEL MFG CORP·Filed 2009·Granted Dec 14, 2010·19 cites·1 claims
- 1773US8291604B2Box levelCHRISTIANSON JOHN·Filed 2010·Granted Oct 23, 2012·3 cites·11 claims
- 1871US6722303B2Fairlead and cam assemblyHARKEN INC·Filed 2002·Granted Apr 20, 2004·17 cites·17 claims
- 1970US8745885B2Box levelEMPIRE LEVEL MFG CORP·Filed 2013·Granted Jun 10, 2014·2 cites·17 claims
- 2067US8011109B2Casing mount for a cylindrical vialEMPIRE LEVEL MFG CORP·Filed 2009·Granted Sep 6, 2011·6 cites·16 claims
- 2162USD623544SBox levelEMPIRE LEVEL MFG CORP·Filed 2009·Granted Sep 14, 2010·11 cites·1 claims
- 2245US2014339295A1Method for Providing Instruction Manual for Using a Measuring ToolEMPIRE LEVEL MFG CORP·Filed 2013·Application pending·0 cites
- 2343USD723954SAngular indicator toolEMPIRE LEVEL MFG CORP·Filed 2013·Granted Mar 10, 2015·4 cites·1 claims
- 2443US2011108428A1Method for Manufacturing High-Visibility Measurement ToolEMPIRE LEVEL MFG CORP·Filed 2009·Application pending·0 cites
- 2542USD887874SFraming squareMILWAUKEE ELECTRIC TOOL CORP·Filed 2019·Granted Jun 23, 2020·2 cites·1 claims
- 2638US6520103B2Boom vang for sailing vesselHARKEN INC·Filed 2000·Granted Feb 18, 2003·1 cites·21 claims
- 2736USD866359SFraming squareMILWAUKEE ELECTRIC TOOL CORP·Filed 2018·Granted Nov 12, 2019·1 cites·1 claims
- 2833USD618120SSide brace for central-vial region of a box levelEMPIRE LEVEL MFG CORP·Filed 2009·Granted Jun 22, 2010·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →