Inventor · Fremont, CA, US

Zhen Hou

22Patents
4h-index
27Co-inventors
63Inventor score

Filing activity: Dec 8, 1999 → Nov 28, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US7957972B2 Voice recognition system and method thereof Physics 42 Active
US6581169B1 Method and device for automatic computer testing on a plurality of computers through a local area network Physics 8 Expired
US7397621B2 Servo pattern characterization on magnetic disks Physics 7 Active
US9389408B2 3D microscope and methods of measuring patterned substrates Physics 4 Active
US7689417B2 Method, system and apparatus for improved voice recognition Physics 4 Active
US10048480B2 3D microscope including insertable components to provide multiple imaging and measurement capabilities Physics 3 Active
US9036869B2 Multi-surface optical 3D microscope Electricity 2 Active
US11536940B2 3D microscope including insertable components to provide multiple imaging and measurement capabilities Physics 1 Active
US6813642B2 Communication process by connecting server end in series with system under verification in a network Electricity 1 Expired
US7760451B2 Imaging device capable of retracting lens unit thereof and lens unit protecting method thereof Physics 1 Active
US8023671B2 Piezoelectric buzzer driving circuit Physics 1 Active
US9645381B2 Multi-surface optical 3D microscope Electricity 0 Active
US8247928B2 Mobile phone and power supply system of the same Electricity 0 Active
US9664888B2 Multi-surface optical 3D microscope Electricity 0 Active
US12265212B2 3D microscope including insertable components to provide multiple imaging and measurement capabilities Physics 0 Active
US8976366B2 System and method for monitoring LED chip surface roughening process Physics 0 Active
US10209501B2 3D microscope and methods of measuring patterned substrates Physics 0 Active
US7723870B2 Power switch system Physics 0 Active
US10884228B2 3D microscope including insertable components to provide multiple imaging and measurement capabilities Physics 0 Active
US11141127B2 Method and system for determining irradiation dose General 0 Revoked
US11219426B2 Method and system for determining irradiation dose Physics 0 Active
US11294161B2 3D microscope including insertable components to provide multiple imaging and measurement capabilities Physics 0 Active

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