Membership
Tour
Register
Log in
Chi-Huang Chang
Follow
Person
Sugar Land, TX, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Apparatus and methods for sidewall percussion coring using a voltag...
Patent number
8,230,946
Issue date
Jul 31, 2012
Halliburton Energy Services, Inc.
Don L. Crawford
F42 - AMMUNITION BLASTING
Information
Patent Grant
Formation tester tool seal pad
Patent number
7,584,655
Issue date
Sep 8, 2009
Halliburton Energy Services, Inc.
Anthony H. van Zuilekom
E21 - EARTH DRILLING MINING
Information
Patent Grant
Probe isolation seal pad
Patent number
7,121,338
Issue date
Oct 17, 2006
Halliburton Energy Services, Inc.
Anthony Herman van Zuilekom
E21 - EARTH DRILLING MINING
Information
Patent Grant
Recirculatable ball-drop release device for lateral oilwell drillin...
Patent number
6,318,470
Issue date
Nov 20, 2001
Halliburton Energy Services, Inc.
Chi-Huang Michael Chang
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Apparatus and Methods for Sidewall Percussion Coring Using a Voltag...
Publication number
20100163305
Publication date
Jul 1, 2010
Halliburton Energy Services, Inc.
Don L. Crawford
F42 - AMMUNITION BLASTING
Information
Patent Application
FORMATION TESTER TOOL SEAL PAD
Publication number
20080295588
Publication date
Dec 4, 2008
Anthony H. van Zuilekom
E21 - EARTH DRILLING MINING
Information
Patent Application
Probe isolation seal pad
Publication number
20050161218
Publication date
Jul 28, 2005
Halliburton Energy Services, Inc.
Anthony Hermann van Zuilekom
E21 - EARTH DRILLING MINING