Inventor
CHENG KA WING
HK9 patents
⚠️ This page may combine multiple inventors who share the name “CHENG KA WING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GOLDWAY TECH LIMITED
8 patentsUS11467101B2Oct 11, 2022
System for ascertaining optical characteristics of gemstone
GOLDWAY TECH LIMITED2 citations68
US11326952B2May 10, 2022
Process and system for colour grading for diamonds
GOLDWAY TECH LIMITED1 citations57
US11835466B2Dec 5, 2023
Diamond clarity measurement process and system
GOLDWAY TECH LIMITED0 citations55
US11016033B2May 25, 2021
Diamond clarity measurement process and system
GOLDWAY TECH LIMITED0 citations55
US12292385B2May 6, 2025
Gemstone colour grading process and grading system
GOLDWAY TECH LIMITED0 citations53
US11879859B2Jan 23, 2024
Process for determining the type of a diamond
GOLDWAY TECH LIMITED0 citations53
US11137355B2Oct 5, 2021
Process and system for diamond clarity measurement
GOLDWAY TECH LIMITED0 citations47
US10762666B2Sep 1, 2020
Colour grading process and system for diamonds
GOLDWAY TECH LIMITED0 citations34