Inventor

Kok Wai Cheah

Inventor

Hong Kong, CN

Overview

13→

Patents

2004–2021

Patent span

Chemistry

Primary field (CPC C)

Patents· 13 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C03Cprimary

C03CChemical composition of glasses, glazes or vitreous enamels21%

C23CCoating metallic material21%

G02BOptical elements, systems or apparatus9%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form6%

G01BMeasuring length, thickness or similar linear dimensions6%

G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves6%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light6%

H10HInorganic light-emitting semiconductor devices having potential barriers6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

PatentTitleYear

11,028,471Sapphire thin film coated substrate2021 10,941,480Sapphire thin film coated flexible substrate2021 10,227,689Sapphire thin film coated substrate2019 10,191,193Nano bi-material electromagnetic spectrum shifter2019 10,072,329Sapphire thin film coated flexible substrate2018 9,932,663Sapphire thin film coated substrate2018 9,923,339'Tunable amplified spontaneous emission (ASE) laser'2018 9,695,501'Sapphire thin film coated substrate'2017 9,614,346'Organic laser for measurement'2017 9,610,754'Fabrication of highly flexible near-infrared metamaterials'2017 9,227,383'Highly flexible near-infrared metamaterials'2016 6,869,814'Silicon-based ultra-violet LED'2005 6,759,686'Silicon-based ultra-violet LED'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2005Based in Symphony Bay, HK· patent location history

2016Patents assigned to UNIV HONG KONG BAPTIST (1)· patent assignee history

2016–2021Based in Hong Kong, CN· patent location history

2017–2019Patents assigned to UNIV HONG KONG BAPTIST UNIV (8)· patent assignee history

2021Patents assigned to HKBU R&D LICENSING LTD (2)· patent assignee history

2021Patents assigned to HKBU R & D LICENSING LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNIV HONG KONG BAPTIST UNIV	8	2017–2019
HKBU R&D LICENSING LTD	2	2021
HKBU R & D LICENSING LTD	1	2021
UNIV HONG KONG BAPTIST	1	2016

Locations

Location	Patents	Span
Hong Kong, CN	11	2016–2021
Symphony Bay, HK	2	2004–2005