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Inventor

Cheng-Chung Liu

Inventor
Chiayi County, TW

Overview

8→
Patents
1992–2014
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 8 as inventor

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

E05Bprimary
E05BLocks32%
Y10TTechnical subjects covered by former us classification32%
H04QSelecting11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
G06FElectric digital data processing5%
H04MTelephonic communication5%
H04WWireless communication networks5%
PatentTitleYear
8,881,562'Mortise lock'20148,316,676'Re-keyable cylinder lock'20128,182,006'Cylinder lock having a reinforcement structure coupled to an outer rose disc'20128,182,005'Cylinder lock with reinforcements to improve structural strength'20128,087,273'Lock with a support structure'20127,748,758'Cylinder lock having improved torsional strength'20105,537,467'Method for forwarding a call to a temporarily utilized portable telephone'19965,155,837'Methods and apparatus for software retrofitting'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1996Patents assigned to BELL COMMUNICATIONS RES (2)· patent assignee history
1992–1996Based in Warren, NJ, US· patent location history
2010–2012Patents assigned to TONG LUNG METAL IND CO LTD (5)· patent assignee history
2010–2014Based in Chiayi County, TW· patent location history
2012–2014Patents assigned to LIU CHENG-CHUNG (5)· patent assignee history
2012–2014Patents assigned to CHIANG WEI-LIANG (2)· patent assignee history
2012Patents assigned to DON LAN-KUN (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LIU CHENG-CHUNGself52012–2014
TONG LUNG METAL IND CO LTD52010–2012
BELL COMMUNICATIONS RES21992–1996
CHIANG WEI-LIANG22012–2014
DON LAN-KUN22012
Locations
LocationPatentsSpan
Chiayi County, TW62010–2014
Warren, New Jersey, US21992–1996