Inventor · New Haven, IN, US

Curtis E. Graber

59Patents
9h-index
4Co-inventors
71Inventor score

Filing activity: Aug 9, 2004 → Aug 9, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
USD619119S1 Housing for public address system General 90 Expired
US7837006B1 Enhanced spectrum acoustic energy projection system Electricity 24 Active
US7760899B1 Subwoofer with cascaded array of drivers arranged with staggered spacing Electricity 23 Active
US10375479B2 Electric motor Electricity 22 Active
US8111585B1 Underwater acoustic transducer array and sound field shaping system Physics 20 Active
US8117966B1 Stun grenade Mechanical Engineering; Lighting; Heating 14 Active
USD625706S1 Housing for public address system General 11 Expired
US7624839B1 Enclosure for symbiotic active/passive operation of an acoustic driver Electricity 10 Active
US7903834B1 Curve fitted electrodynamic planar loudspeaker Electricity 9 Active
USD621814S1 Housing for public address system General 9 Expired
US8111836B1 System and method using a phased array of acoustic generators for producing an adaptive null zone Physics 8 Active
US8989419B2 Phase plug with axially twisted radial channels Electricity 8 Active
US7766122B2 Acoustic energy projection system Electricity 7 Active
USD620475S1 Housing for public address system General 7 Expired
USD608347S1 Acoustic hailing device enclosure General 6 Expired
US7621369B2 Acoustic energy projection system Electricity 5 Active
US7912241B1 Field serviceable planar loudspeaker Electricity 5 Active
US8925478B2 Directional isophasic toroidal whistle Physics 5 Active
US8248473B2 Robotic sentry with low dispersion acoustic projector Physics 4 Active
US8351616B1 Array of multiple LF transducers with ultrahigh cardioid sound pattern generation Electricity 4 Active
US8050442B1 Cascaded transducer array arrangement for control over an acoustic pressure gradient through a horn Electricity 4 Active
US8469140B1 Radial waveguide for double cone transducers Electricity 4 Active
USD808929S1 Speaker General 4 Active
US7813516B1 System for cardioid sound field generation from dissimilar sources Electricity 4 Active
US8311261B2 Acoustic transducer array Electricity 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.