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Yanmei Li
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Katy, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Engine air shut-off valve system
Patent number
10,012,162
Issue date
Jul 3, 2018
Ming Fei Chen
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Accumulator over hydraulic pump double-acting cylinder for artifici...
Patent number
9,828,979
Issue date
Nov 28, 2017
Halliburton Energy Services, Inc.
Tao Tao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Accumulator counterbalanced three chamber cylinder for artificial l...
Patent number
9,631,463
Issue date
Apr 25, 2017
Halliburton Energy Services, Inc.
Tao Tao
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pneumatic-on-top counterbalanced three-chamber cylinder for artific...
Patent number
9,631,464
Issue date
Apr 25, 2017
Halliburton Energy Services, Inc.
Tao Tao
E21 - EARTH DRILLING MINING
Information
Patent Grant
RCD sealing elements with multiple elastomer materials
Patent number
8,596,345
Issue date
Dec 3, 2013
Smith International, Inc.
Yanmei Li
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
ENGINE AIR SHUT-OFF VALVE SYSTEM
Publication number
20170314485
Publication date
Nov 2, 2017
Ming Fei Chen
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Application
Engine Air Shut-off Valve
Publication number
20170045002
Publication date
Feb 16, 2017
Ming Fei Chen
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Application
ACCUMULATOR OVER HYDRAULIC PUMP DOUBLE-ACTING CYLINDER FOR ARTIFICI...
Publication number
20160258426
Publication date
Sep 8, 2016
Halliburton Energy Services, Inc.
Tao TAO
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
ACCUMULATOR COUNTERBALANCED THREE-CHAMBER CYLINDER FOR ARTIFICIAL L...
Publication number
20160010437
Publication date
Jan 14, 2016
Tao TAO
E21 - EARTH DRILLING MINING
Information
Patent Application
PNEUMATIC-ON-TOP COUNTERBALANCED THREE-CHAMBER CYLINDER FOR ARTIFIC...
Publication number
20160010438
Publication date
Jan 14, 2016
Tao TAO
E21 - EARTH DRILLING MINING
Information
Patent Application
RCD SEALING ELEMENTS WITH MULTIPLE ELASTOMER MATERIALS
Publication number
20120118559
Publication date
May 17, 2012
Smith International, Inc.
Yanmei Li
E21 - EARTH DRILLING MINING