Inventor · disambiguated record
William D. Helgeson
Also filed as: HELGESON WILLIAM · HELGESON WILLIAM D
3 granted patents·1 pending application·64 citations·filing 1981–2010
73Inventor score
Top patents by PatentIndex Score
4 records- 0178US4398346AMethod for lithium anode and electrochemical cell fabricationMEDTRONIC INC·Filed 1981·Granted Aug 16, 1983·42 cites·61 claims
- 0239US5209994ALithium-iodine electrochemical cells with improved end of life characteristicsMEDTRONIC INC·Filed 1990·Granted May 11, 1993·14 cites·16 claims
- 0335US2011149953A1Tracking results of a v2 query in voice over internet (VoIP) emergency call systemsHELGESON WILLIAM·Filed 2010·Application pending·0 cites
- 0434US5455123AMethod for making an electrochemical cellMEDTRONIC INC·Filed 1994·Granted Oct 3, 1995·8 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →