Inventor
NG CHIK WAI (DAVID)
HK16 patents
⚠️ This page may combine multiple inventors who share the name “NG CHIK WAI (DAVID)”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HK APPLIED SCIENCE & TECH RES
6 patentsUS7705685B2Apr 27, 2010
Low-voltage oscillator with capacitor-ratio selectable duty cycle
HK APPLIED SCIENCE & TECH RES8 citations83
US7705662B2Apr 27, 2010
Low voltage high-output-driving CMOS voltage reference with temperature compensation
HK APPLIED SCIENCE & TECH RES16 citations83
US9306461B2Apr 5, 2016
LED driver with small output ripple without requiring a high-voltage primary-side electrolytic capacitor
HK APPLIED SCIENCE & TECH RES4 citations69
US9385542B2Jul 5, 2016
Serial multi-battery charger with independent simultaneous charge and discharge
HK APPLIED SCIENCE & TECH RES7 citations64
US7999512B2Aug 16, 2011
Single-power-transistor battery-charging circuit using voltage-boosted clock
HK APPLIED SCIENCE & TECH RES1 citations51
US7795976B2Sep 14, 2010
Slew-rate-enhanced error amp with adaptive transconductance and single dominant pole shared by main and auxiliary amps
HK APPLIED SCIENCE & TECH RES1 citations51
HIGH TECH TECH LIMITED
5 patentsUS11206014B1Dec 21, 2021
Digital frequency dithering for switched-mode power supplies (SMPS) using triangular, asymmetric cubic, or random cubic spread spectrum oscillators
HIGH TECH TECH LIMITED6 citations65
US11258364B2Feb 22, 2022
Flexible array of DC-DC converters reconfigurable using a shared serial bus
HIGH TECH TECH LIMITED2 citations60
US12347789B2Jul 1, 2025
Air-core transformer package with ferrite electro-magnetic interference (EMI) shielding of integrated-circuit (IC) chip
HIGH TECH TECH LIMITED0 citations42
US11990422B2May 21, 2024
Ferrite electro-magnetic interference (EMI) shield between an integrated-circuit (IC) chip and an air-core inductor all inside a hybrid lead-frame package
HIGH TECH TECH LIMITED0 citations42
US12524371B2Jan 13, 2026
Enhanced Harvard architecture reduced instruction set computer (RISC) with debug mode access of instruction memory within a unified memory space
HIGH TECH TECH LIMITED0 citations36
KWONG KWOK KUEN DAVID
2 patentsUS8072721B2Dec 6, 2011
ESD protection using a capacitivly-coupled clamp for protecting low-voltage core transistors from high-voltage outputs
KWONG KWOK KUEN DAVID7 citations81
US8643337B2Feb 4, 2014
Single-power-transistor battery-charging circuit using voltage-boosted clock
KWONG KWOK KUEN DAVID1 citations51