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Chi Yin Mak
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Hong Kong, HK
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Patents Grants
last 30 patents
Information
Patent Grant
Domino-type torque generator
Patent number
11,913,532
Issue date
Feb 27, 2024
Chi Yin Mak
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Quick string-tying device and method
Patent number
11,602,197
Issue date
Mar 14, 2023
Yok Key Mak
A43 - FOOTWEAR
Information
Patent Grant
Track zipper and connecting structure with a track zipper
Patent number
10,349,708
Issue date
Jul 16, 2019
Chi Yin Mak
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Patents Applications
last 30 patents
Information
Patent Application
QUICK STRING-TYING DEVICE AND METHOD
Publication number
20220081249
Publication date
Mar 17, 2022
Yok Key Mak
D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information
Patent Application
TRACK ZIPPER AND CONNECTING STRUCTURE WITH A TRACK ZIPPER
Publication number
20190246749
Publication date
Aug 15, 2019
Chi Yin Mak
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Application
Packaging device and method
Publication number
20050218030
Publication date
Oct 6, 2005
Chi Yin Mak
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL