Inventor

Lewis Ka Hang Cheng

Inventor

Hong Kong, CN

Overview

3→

Patents

2012–2020

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 3 as inventor

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

F21Sprimary

F21SNon-portable lighting devices20%

F21VFunctional features or details of lighting devices or systems thereof20%

A47GHousehold or table equipment10%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers10%

F21KNon-electric light sources using luminescence10%

F21WIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to uses or applications of lighting devices or systems10%

F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted10%

H05BElectric heating10%

PatentTitleYear

10,711,963Multi-channel flame simulation method and apparatus2020 10,479,597Tamper-proof case systems and methods2019 8,309,188'Pull up tree system'2012

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2012–2020Patents assigned to POLYGROUP MACAU LTD BVI (2)· patent assignee history

2012Patents assigned to CHENG LEWIS (1)· patent assignee history

2012Patents assigned to HARMAN II THOMAS MACMARTIN (1)· patent assignee history

2012–2020Based in Hong Kong, CN· patent location history

2019Patents assigned to CITADEL CASING LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
POLYGROUP MACAU LTD BVI	2	2012–2020
CHENG LEWISself	1	2012
CITADEL CASING LTD	1	2019
HARMAN II THOMAS MACMARTIN	1	2012

Locations

Location	Patents	Span
Hong Kong, CN	3	2012–2020