LexDanaLexDanabeta
Inventor

Chi-Keung Chung

Inventor
Kaoshsiung, TW

Overview

4→
Patents
1999–2011
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B21Dprimary
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material15%
H05KPrinted circuits15%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
Y10TTechnical subjects covered by former us classification15%
B23PMetal-working not otherwise provided for8%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%
G02BOptical elements, systems or apparatus8%
G06FElectric digital data processing8%
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines8%
PatentTitleYear
8,020,423'Electronic casing and method of manufacturing the same'20117,389,664'Electromagnetic forming device for sheet of material'20086,694,594'Method for fabricating a thin metal shell having connecting components'20045,978,144'Prism for optical system'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999Patents assigned to HONG KONG PRODUCTIVITY COUNCIL (1)· patent assignee history
1999Based in Kowloon, HK· patent location history
2004–2011Patents assigned to METAL IND RES & DEV CT (3)· patent assignee history
2004Based in Hsinchu, TW· patent location history
2008Based in Kaohsiung, TW· patent location history
2011Based in Kaoshsiung, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
METAL IND RES & DEV CT32004–2011
HONG KONG PRODUCTIVITY COUNCIL11999
Locations
LocationPatentsSpan
Kaoshsiung, TW12011
Kaohsiung, TW12008
Hsinchu, TW12004
Kowloon, HK11999