4. Communications, electrical: acoustic wave systems and devices
  5. Seismic prospecting
  6. Well logging

Hung-Wen Chang

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Low power charge pump regulating circuit

Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate

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Method for spatially filtering signals representing formation an

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent

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Stepped light guide

Optical waveguides – Noncyclindrical or nonplanar shaped waveguide
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1534254

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