Chuck (Chen-Tsai) Chang

Person

Taichung, TW

People

Patents Grantslast 30 patents

Information Patent Grant
Wrench detent having unsymetrical tooth shapes at left and right end
- Patent number D680397
- Issue date Apr 23, 2013
- Chuck Chang
- D08 - Tools and hardware
Information Patent Grant
Roller skate having a safety device
- Patent number 7,344,143
- Issue date Mar 18, 2008
- Lotuskate Sports Industrial Co., Ltd.
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Skateboard wheel set with suspension device
- Patent number 7,219,907
- Issue date May 22, 2007
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Wrench having a locking device with a smaller driving angle
- Patent number 7,146,881
- Issue date Dec 12, 2006
- Lotuskate Sports Industrial Co., Ltd.
- Chuck Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Wrench having a safety device
- Patent number 7,117,772
- Issue date Oct 10, 2006
- Chuck Chang
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Skateboard having a three-dimensional independent suspension balanc...
- Patent number 6,913,272
- Issue date Jul 5, 2005
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Socket structure
- Patent number 6,761,093
- Issue date Jul 13, 2004
- Chuck Chang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Automatically restorable universal connector
- Patent number 6,656,053
- Issue date Dec 2, 2003
- Chuck Chang
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Roller-type ratchet device for wrench
- Patent number 6,253,646
- Issue date Jul 3, 2001
- Chuck (Chen-Tsai) Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Base for in-line roller skate
- Patent number D426864
- Issue date Jun 20, 2000
- Chuck Chang
- D21 - Games, toys, and sports goods
Information Patent Grant
Suspension system for in-line roller skates
- Patent number 6,053,512
- Issue date Apr 25, 2000
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Structure of padlock
- Patent number 5,823,021
- Issue date Oct 20, 1998
- Charlie Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Padlock with an improved locking structure
- Patent number 5,005,386
- Issue date Apr 9, 1991
- Charlie Y. Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Identification Structure for a Socket
- Publication number 20110017026
- Publication date Jan 27, 2011
- Chuck CHANG
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Wrench
- Publication number 20100162857
- Publication date Jul 1, 2010
- Chuck CHANG
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Printed Mat
- Publication number 20090155536
- Publication date Jun 18, 2009
- Charles Chang
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Application
Wrench having a locking device with a smaller driving angle
- Publication number 20060070497
- Publication date Apr 6, 2006
- Chuck Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Roller skate having a safety device
- Publication number 20050263968
- Publication date Dec 1, 2005
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Wrench having a safety device
- Publication number 20050172763
- Publication date Aug 11, 2005
- Chuck Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Skateboard wheel set with suspension device
- Publication number 20050093262
- Publication date May 5, 2005
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Wrench having a locking device with a smaller driving angle
- Publication number 20040089108
- Publication date May 13, 2004
- Chuck Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Skateboard having a three-dimensional independent suspension balanc...
- Publication number 20040036243
- Publication date Feb 26, 2004
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Wrench having a safety device
- Publication number 20040020337
- Publication date Feb 5, 2004
- Chuck Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Roller skate having a safety device
- Publication number 20030214104
- Publication date Nov 20, 2003
- Chuck Chang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Socket structure
- Publication number 20030154827
- Publication date Aug 21, 2003
- Chuck Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Automatically restorable universal connector
- Publication number 20020151368
- Publication date Oct 17, 2002
- Chuck Chang
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Chuck (Chen-Tsai) Chang

Person

Patents Grantslast 30 patents

Wrench detent having unsymetrical tooth shapes at left and right end

Roller skate having a safety device

Skateboard wheel set with suspension device

Wrench having a locking device with a smaller driving angle

Wrench having a safety device

Skateboard having a three-dimensional independent suspension balanc...

Socket structure

Automatically restorable universal connector

Roller-type ratchet device for wrench

Base for in-line roller skate

Suspension system for in-line roller skates

Structure of padlock

Padlock with an improved locking structure

Patents Applicationslast 30 patents

Identification Structure for a Socket

Wrench

Printed Mat

Wrench having a locking device with a smaller driving angle

Roller skate having a safety device

Wrench having a safety device

Skateboard wheel set with suspension device

Wrench having a locking device with a smaller driving angle

Skateboard having a three-dimensional independent suspension balanc...

Wrench having a safety device

Roller skate having a safety device

Socket structure

Automatically restorable universal connector