Membership
Tour
Register
Log in
TONG OIL TOOLS CO., LTD.
Follow
Organization
Xi'an, Shaanxi, CN
Organizations
Overview
Industries
People
People
Information
Transactions
Events
Impact
Please log in for detailed analytics
Patents Grants
last 30 patents
Information
Patent Grant
Composite perforation method and device with propping agent
Patent number
9,297,243
Issue date
Mar 29, 2016
Tong Oil Tools Co., Ltd.
Guoan Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Structure for gunpowder charge in multi-frac composite perforating...
Patent number
9,297,242
Issue date
Mar 29, 2016
Tong Oil Tools Co., Ltd.
Guoan Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Structure for gunpowder charge in combined fracturing perforation d...
Patent number
9,027,667
Issue date
May 12, 2015
Tong Oil Tools Co. Ltd.
Guoan Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Combined fracturing and perforating method and device for oil and g...
Patent number
8,960,289
Issue date
Feb 24, 2015
Tong Oil Tools Co., Ltd.
Guoan Zhang
F42 - AMMUNITION BLASTING
Information
Patent Grant
Structure for gunpowder charge in multi-frac composite perforating...
Patent number
8,943,944
Issue date
Feb 3, 2015
Tong Oil Tools Co., Ltd.
Guoan Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Cable head for petroleum logging
Patent number
8,607,856
Issue date
Dec 17, 2013
Tong Oil Tools Co., Ltd.
Guoan Zhang
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
High-energy gas fracture apparatus for through-tubing operations
Patent number
7,819,180
Issue date
Oct 26, 2010
Tong Oil Tools Co., Ltd.
Zhihua Zhou
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
STRUCTURE FOR GUNPOWDER CHARGE IN MULTI-FRAC COMPOSITE PERFORATING...
Publication number
20150107831
Publication date
Apr 23, 2015
TONG PETROTECH INC
Guoan ZHANG
E21 - EARTH DRILLING MINING
Information
Patent Application
STRUCTURE FOR GUNPOWDER CHARGE IN COMBINED FRACTURING PERFORATION D...
Publication number
20130145924
Publication date
Jun 13, 2013
TONG OIL TOOLS CO., LTD.
Guoan ZHANG
E21 - EARTH DRILLING MINING
Information
Patent Application
COMPOSITE PERFORATION METHOD AND DEVICE WITH PROPPING AGENT
Publication number
20130146287
Publication date
Jun 13, 2013
TONG OIL TOOLS CO., LTD.
Guoan ZHANG
E21 - EARTH DRILLING MINING
Information
Patent Application
CABLE HEAD FOR PETROLEUM LOGGING
Publication number
20110318088
Publication date
Dec 29, 2011
TONG OIL TOOLS CO., LTD.
Guoan Zhang
E21 - EARTH DRILLING MINING
Trademark
last 30 trademarks
Information
Trademark
85940233 - TONG OIL TOOLS
Serial number
85940233
Registration number
4566563
Filing date
May 22, 2013
Tong Oil Tools Co., Ltd.
7 - Machines and machine tools
Information
Trademark
85940226 - TY
Serial number
85940226
Registration number
4566562
Filing date
May 22, 2013
Tong Oil Tools Co., Ltd.
7 - Machines and machine tools
Information
Trademark
78442721 - FRACGUN
Serial number
78442721
Registration number
3080683
Filing date
Jun 28, 2004
Tong Oil Tools Co., Ltd.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
78431363 - FRACGUN
Serial number
78431363
Registration number
2981131
Filing date
Jun 7, 2004
Tong Oil Tools Co., Ltd.
7 - Machines and machine tools