Inventor · disambiguated record
Norman L. Helgeson
Also filed as: HELGESON NORMAN L · HELGESON NORMAN LEWIS
4 granted patents·1 pending application·139 citations·filing 1981–2009
79Inventor score
Top patents by PatentIndex Score
5 records- 0194US4391102AFresh water production from power plant waste heatBIPHASE ENERGY SYSTEMS·Filed 1981·Granted Jul 5, 1983·96 cites·18 claims
- 0274US7918310B1Noise attenuation device for reducing jet engine noise during testingUS NAVY·Filed 2009·Granted Apr 5, 2011·13 cites·20 claims
- 0353US6497137B2Annular after reactor with sound attenuator for use in a jet engine test cell and test standUS NAVY·Filed 2001·Granted Dec 24, 2002·16 cites·23 claims
- 0435US6237395B1Annular after reactor for use with a jet engine test cellUS NAVY·Filed 1999·Granted May 29, 2001·14 cites·14 claims
- 0532US2011048847A1Noise attenuation device for reducing noise attenuation in a jet engine test cellUS NAVY·Filed 2009·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →