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Otis Ku
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Kowloon, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Glasses with legs bendable in multiple angles
Patent number
9,910,293
Issue date
Mar 6, 2018
Sun Hing Optical Manufactory Limited
Otis Ngai-Yung Ku
G02 - OPTICS
Information
Patent Grant
Quick-release eyeglasses hinge
Patent number
7,264,349
Issue date
Sep 4, 2007
Sun Hing Optical Manufactory Limited
Otis Ku
G02 - OPTICS
Information
Patent Grant
Spectacle frame with detachable arms
Patent number
6,969,173
Issue date
Nov 29, 2005
Sun Hing Optical Manufactory Limited
Otis Ku
G02 - OPTICS
Information
Patent Grant
Spectacle frame having user-replaceable arm
Patent number
6,942,338
Issue date
Sep 13, 2005
Sun Hing Optical Manufactory Limited
Otis Ku
G02 - OPTICS
Information
Patent Grant
Spectacles
Patent number
6,439,716
Issue date
Aug 27, 2002
Sun Hing Optical Manufactory Limited
Otis Ku
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Glasses with Legs Bendable in Multiple Angles
Publication number
20160341976
Publication date
Nov 24, 2016
Sun Hing Optical Manufactory Limited
Otis Ngai-Yung Ku
G02 - OPTICS
Information
Patent Application
SPECTACLE FRAME HAVING USER-REPLACEABLE ARM
Publication number
20050094093
Publication date
May 5, 2005
Sun Hing Optical Manufactory Limited
Otis Ku
G02 - OPTICS