Inventor · disambiguated record
Helge E. Engan
Also filed as: ENGAN HELGE · ENGAN HELGE E
3 granted patents·1 pending application·49 citations·filing 1984–2007
70Inventor score
Top patents by PatentIndex Score
4 records- 0178US5022732AFiber optic intermode coupling single sideband frequency shifterUNIV LELAND STANFORD JUNIOR·Filed 1989·Granted Jun 11, 1991·40 cites·34 claims
- 0252US6904188B1Acousto-optic tunable filter having improved wave-damping capabilityNOVERA OPTICS INC·Filed 2002·Granted Jun 7, 2005·4 cites·21 claims
- 0338US2008132775A1Ultrasound measurement techniques for bone analysisODETECT AS·Filed 2007·Application pending·0 cites
- 0434US4649509ASurface acoustic wave convolver arrangement with closely spaced impedance matched input transducersSIEMENS AG·Filed 1984·Granted Mar 10, 1987·5 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →