Inventor · Lompoc, CA, US

Robert B. Hammond

78Patents
18h-index
35Co-inventors
84Inventor score

Filing activity: May 10, 1979 → Jan 16, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US10491192B1 Transversely-excited film bulk acoustic resonator Electricity 230 Active
US10637438B2 Transversely-excited film bulk acoustic resonators for high power applications Electricity 221 Active
US10756697B2 Transversely-excited film bulk acoustic resonator Electricity 220 Active
US10601392B2 Solidly-mounted transversely-excited film bulk acoustic resonator Electricity 217 Active
US10868512B2 High power transversely-excited film bulk acoustic resonators on Z-cut lithium niobate Electricity 158 Active
US10917070B2 Bandpass filter with frequency separation between shunt and series resonators set by dielectric layer thickness Electricity 151 Active
US10998882B2 XBAR resonators with non-rectangular diaphragms Electricity 126 Active
US10992283B2 High power transversely-excited film bulk acoustic resonators on rotated Z-cut lithium niobate Electricity 103 Active
US10998877B2 Film bulk acoustic resonator fabrication method with frequency trimming based on electric measurements prior to cavity etch Electricity 102 Active
US10985730B2 Filter devices having high power transversely-excited film bulk acoustic resonators Electricity 102 Active
US11201601B2 Transversely-excited film bulk acoustic resonator with multiple diaphragm thicknesses and fabrication method Electricity 100 Active
US11139794B2 Transversely-excited film bulk acoustic resonator Electricity 55 Active
US11146238B2 Film bulk acoustic resonator fabrication method Electricity 54 Active
US11165407B2 Solidly-mounted transversely-excited film bulk acoustic resonator Electricity 52 Active
US11114998B2 Transversely-excited film bulk acoustic resonators for high power applications Electricity 52 Active
US8701065B1 Microwave acoustic wave filters Electricity 28 Active
US6633208B2 Filter with improved intermodulation distortion characteristics and methods of making the improved filter Emerging Cross-Sectional Technologies 26 Expired
US4948741A Polysilicon photoconductor for integrated circuits Emerging Cross-Sectional Technologies 23 Expired
US9038005B2 Network synthesis design of microwave acoustic wave filters Electricity 15 Active
US5328893A Superconducting devices having a variable conductivity device for introducing energy loss Emerging Cross-Sectional Technologies 14 Expired
US4243888A Laser beam alignment apparatus and method Physics 12 Expired
US4490709A InP:Fe Photoconducting device Emerging Cross-Sectional Technologies 11 Expired
US9165101B2 Network synthesis design of microwave acoustic wave filters Electricity 10 Active
US8990742B2 Network synthesis design of microwave acoustic wave filters Electricity 10 Active
US9208274B2 Network synthesis design of microwave acoustic wave filters Physics 10 Active

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