Inventor · San Jose, CA, US

Alexandre Augusto Shirakawa

38Patents
10h-index
45Co-inventors
71Inventor score

Filing activity: Jan 15, 2008 → Mar 12, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US8575820B2 Stacked bulk acoustic resonator Electricity 38 Active
US9401692B2 Acoustic resonator having collar structure Electricity 28 Active
US9154111B2 Double bulk acoustic resonator comprising aluminum scandium nitride Electricity 28 Active
US8330325B1 Bulk acoustic resonator comprising non-piezoelectric layer Electricity 26 Active
US8508315B2 Acoustically coupled resonator filter with impedance transformation ratio controlled by resonant frequency difference between two coupled resonators Emerging Cross-Sectional Technologies 24 Active
US7868517B2 Lamb wave resonator Electricity 20 Active
US8796904B2 Bulk acoustic resonator comprising piezoelectric layer and inverse piezoelectric layer Electricity 17 Active
US9148117B2 Coupled resonator filter comprising a bridge and frame elements Electricity 14 Active
US9048812B2 Bulk acoustic wave resonator comprising bridge formed within piezoelectric layer Electricity 12 Active
US8350445B1 Bulk acoustic resonator comprising non-piezoelectric layer and bridge Electricity 10 Active
US9571064B2 Acoustic resonator device with at least one air-ring and frame Electricity 9 Active
US9083302B2 Stacked bulk acoustic resonator comprising a bridge and an acoustic reflector along a perimeter of the resonator Electricity 8 Active
US9136818B2 Stacked acoustic resonator comprising a bridge Electricity 7 Active
US9401691B2 Acoustic resonator device with air-ring and temperature compensating layer Electricity 7 Active
US9203374B2 Film bulk acoustic resonator comprising a bridge Electricity 7 Active
US9917567B2 Bulk acoustic resonator comprising aluminum scandium nitride Electricity 6 Active
US9490771B2 Acoustic resonator comprising collar and frame Electricity 6 Active
US8872604B2 Double film bulk acoustic resonators with electrode layer and piezo-electric layer thicknesses providing improved quality factor Electricity 5 Active
US11581869B2 Bulk acoustic wave resonator with mass loading layer Electricity 5 Active
US9548438B2 Acoustic resonator comprising acoustic redistribution layers Electricity 4 Active
US8665038B2 Bulk acoustic wave resonator filter being digitally reconfigurable, with process Electricity 3 Active
US12101077B2 Bulk acoustic wave device with raised frame structure Electricity 3 Active
US12021506B2 Bulk acoustic wave resonators with patterned mass loading layers Electricity 3 Active
US12088278B2 Bulk acoustic wave resonator with patterned mass loading layer and recessed frame Electricity 2 Active
US10128813B2 Bulk acoustic wave (BAW) resonator structure Electricity 1 Active

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