Duan; Zheng

Patent Applications and Registrations

Patent applications and USPTO patent grants for Duan; Zheng.The latest application filed is for "swirl ring and contact element for a plasma arc torch cartridge".

Company Profile

23.50.49

Duan; Zheng - Hanover NH
Duan; Zheng - Beijing CN
Duan; Zheng - San Jose CA
Duan; Zheng - Sunnyvale CA
Duan; Zheng - Zhengzhou CN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Cost effective cartridge for a plasma arc torch Grant 11,432,393 - Duan , et al. August 30, 2	2022-08-30
Consumable component parts for a plasma torch Grant RE49,153 - Lindsay , et al. July 26, 2	2022-07-26
Swirl Ring and Contact Element for a Plasma Arc Torch Cartridge App 20210136905 - Zhang; Yu ; et al.	2021-05-06
Swirl ring and contact element for a plasma arc torch cartridge Grant 10,912,183 - Zhang , et al. February 2, 2	2021-02-02
Cost Effective Cartridge for a Plasma Arc Torch App 20210029814 - Zhang; Yu ; et al.	2021-01-28
Thermal transistor Grant 10,866,039 - Duan , et al. December 15, 2	2020-12-15
Thermal transistor Grant 10,859,329 - Duan , et al. December 8, 2	2020-12-08
Operating plasma arc processing systems at reduced current and gas pressure levels and related systems and methods Grant 10,820,401 - Patel , et al. October 27, 2	2020-10-27
Disabling plasma arc torches and related systems and methods Grant 10,772,183 - Wu , et al. Sep	2020-09-08
Thread connection for a torch system Grant 10,737,347 - Jogdand , et al. A	2020-08-11
Devices for gas cooling plasma arc torches and related systems and methods Grant 10,716,199 - Zhang , et al.	2020-07-14
Method and system for engineering the secondary barrier layer in dual magnetic junctions Grant 10,644,226 - Duan , et al.	2020-05-05
Cost Effective Cartridge For A Plasma Arc Torch App 20200077504 - Duan; Zheng ; et al.	2020-03-05
Cost effective cartridge for a plasma arc torch Grant 10,582,605 - Zhang , et al.	2020-03-03
Apparatus and method for securing a plasma torch electrode Grant 10,542,614 - Duan , et al. Ja	2020-01-21
Cost effective cartridge for a plasma arc torch Grant 10,462,891 - Zhang , et al. Oc	2019-10-29
Method And System For Engineering The Secondary Barrier Layer In Dual Magnetic Junctions App 20190319182 - Duan; Zheng ; et al.	2019-10-17
Method And System For Engineering The Secondary Barrier Layer In Dual Magnetic Junctions App 20190273201 - Duan; Zheng ; et al.	2019-09-05
Cost Effective Cartridge for a Plasma Arc Torch App 20190269002 - Zhang; Yu ; et al.	2019-08-29
Cost Effective Cartridge for a Plasma Arc Torch App 20190261501 - Zhang; Yu ; et al.	2019-08-22
Method and system for engineering the secondary barrier layer in dual magnetic junctions Grant 10,381,550 - Duan , et al. A	2019-08-13
Thermal Transistor App 20190212079 - DUAN; ZHENG ; et al.	2019-07-11
Method For Controlling Thermal Resistance App 20190215911 - DUAN; ZHENG ; et al.	2019-07-11
Thermal Transistor App 20190212078 - DUAN; ZHENG ; et al.	2019-07-11
Swirl ring and contact element for a plasma arc torch cartridge Grant 10,335,888 - Zhang , et al.	2019-07-02
Cost effective cartridge for a plasma arc torch Grant 10,321,551 - Zhang , et al.	2019-06-11
Method and system for determining temperature using a magnetic junction Grant 10,297,300 - Schafer , et al.	2019-05-21
Method and system for determining temperature using a magnetic junction Grant 10,276,226 - Schafer , et al.	2019-04-30
Method And System For Determining Temperature Using A Magnetic Junction App 20180294024 - Schafer; Sebastian ; et al.	2018-10-11
Swirl Ring And Contact Element For A Plasma Arc Torch Cartridge App 20180257164 - Zhang; Yu ; et al.	2018-09-13
Swirl Ring And Contact Element For A Plasma Arc Torch Cartridge App 20180228013 - Zhang; Yu ; et al.	2018-08-09
Failure event detection in a plasma arc torch Grant 10,039,178 - Liu , et al. July 31, 2	2018-07-31
Disabling Plasma Arc Torches And Related Systems And Methods App 20180206322 - Wu; Jing ; et al.	2018-07-19
Thread Connection for a Torch System App 20180178310 - Jogdand; Harshawardhan ; et al.	2018-06-28
Method for preparing chiral ferrocene diphosphine ligand Grant 9,937,491 - Chen , et al. April 10, 2	2018-04-10
Plasma cutting system with efficient components Grant 9,908,195 - Roberts , et al. March 6, 2	2018-03-06
Operating Plasma Arc Processing Systems at Reduced Current and Gas Pressure Levels and Related Systems and Methods App 20180056430 - Patel; Shreyansh ; et al.	2018-03-01
Method For Preparing Chiral Ferrocene Diphosphine Ligand App 20170326537 - CHEN; Hui ; et al.	2017-11-16
Electrode for a contact start plasma arc torch and contact start plasma arc torch employing such electrodes Grant 9,492,883 - Mather , et al. November 15, 2	2016-11-15
Plasma ARC torch electrode with symmetrical plasma gas flow Grant 9,480,139 - Zhang , et al. October 25, 2	2016-10-25
Diffuser shape vent slots in a hand torch shield castellation Grant 9,462,670 - Patel , et al. October 4, 2	2016-10-04
Cost Effective Cartridge for a Plasma Arc Torch App 20160165711 - Zhang; Yu ; et al.	2016-06-09
Cost Effective Cartridge for a Plasma Arc Torch App 20160165712 - Zhang; Yu ; et al.	2016-06-09
Devices for gas cooling plasma arc torches and related systems and methods Grant 9,326,367 - Zhang , et al. April 26, 2	2016-04-26
Method And System For Determining Temperature Using A Magnetic Junction App 20160104544 - Schafer; Sebastian ; et al.	2016-04-14
Cost Effective Cartridge for a Plasma Arc Torch App 20160050740 - Zhang; Yu ; et al.	2016-02-18
Plasma Cutting System with Efficient Components App 20150343554 - Roberts; Jesse A. ; et al.	2015-12-03
Devices for gas cooling plasma arc torches and related systems and methods Grant 9,144,148 - Zhang , et al. September 22, 2	2015-09-22
Devices for Gas Cooling Plasma Arc Torches and Related Systems and Methods App 20150028002 - Zhang; Yu ; et al.	2015-01-29
Devices for Gas Cooling Plasma Arc Torches and Related Systems and Methods App 20150028000 - Zhang; Yu ; et al.	2015-01-29
Devices for Gas Cooling Plasma Arc Torches and Related Systems and Methods App 20150028001 - Zhang; Yu ; et al.	2015-01-29
Apparatus And Method For Securing A Plasma Torch Electrode App 20150021300 - Duan; Zheng ; et al.	2015-01-22
Plasma ARC Torch Electrode with Symmetrical Plasma Gas Flow App 20150021302 - Zhang; Yu ; et al.	2015-01-22
Diffuser Shape Vent Slots in a Hand Torch Shield Castellation App 20150014285 - Patel; Shreyansh ; et al.	2015-01-15
Torch flow regulation using nozzle features Grant 8,884,179 - Roberts , et al. November 11, 2	2014-11-11
Consumable component parts for a plasma torch Grant 8,866,038 - Lindsay , et al. October 21, 2	2014-10-21
Diffuser shape vent slots in a hand torch shield castellation Grant 8,835,796 - Zhang , et al. September 16, 2	2014-09-16
Method and apparatus for automatic gas control for a plasma arc torch Grant 8,809,728 - Brandt , et al. August 19, 2	2014-08-19
Devices for gas cooling plasma arc torches and related systems and methods Grant 8,698,036 - Zhang , et al. April 15, 2	2014-04-15
Method and apparatus for automatic gas control for a plasma arc torch Grant 8,541,710 - Brandt , et al. September 24, 2	2013-09-24
Nozzle head with increased shoulder thickness Grant 8,513,565 - Duan August 20, 2	2013-08-20
Plasma arc torch providing angular shield flow injection Grant 8,395,077 - Duan , et al. March 12, 2	2013-03-12
Failure Event Detection In A Plasma Arc Torch App 20120234803 - Liu; Qinghua ; et al.	2012-09-20
Electrode for a Contact Start Plasma Arc Torch and Contact Start Plasma Arc Torch Employing Such Electrodes App 20120181257 - Mather; Jonathan P. ; et al.	2012-07-19
Torch Flow Regulation Using Nozzle Features App 20120012560 - Roberts; Jesse ; et al.	2012-01-19
Diffuser Shape Vent Slots in a Hand Torch Shield Castellation App 20120012565 - Zhang; Yu ; et al.	2012-01-19
Plasma Arc Torch Providing Angular Shield Flow Injection App 20110062124 - Duan; Zheng ; et al.	2011-03-17
Plasma arc torch providing angular shield flow injection Grant 7,829,816 - Duan , et al. November 9, 2	2010-11-09
Method and apparatus for alignment of components of a plasma arc torch Grant 7,754,996 - Brandt , et al. July 13, 2	2010-07-13
Method and Apparatus for Alignment of Components of a Plasma Arc Torch App 20090308849 - Brandt; Aaron D. ; et al.	2009-12-17
Apparatus for cooling plasma arc torch nozzles Grant 7,605,340 - Duan October 20, 2	2009-10-20
Nozzle Head with Increased Shoulder Thickness App 20090255909 - Duan; Zheng	2009-10-15
Generating discrete gas jets in plasma arc torch applications Grant 7,598,473 - Cook , et al. October 6, 2	2009-10-06
Method And Apparatus For Automatic Gas Control For A Plasma Arch Torch App 20080210670 - Brandt; Aaron D. ; et al.	2008-09-04
Consumable Component Parts For A Plasma Torch App 20080173622 - Lindsay; Jon W. ; et al.	2008-07-24
Method and Apparatus for Automatic Gas Control for a Plasma Arc Torch App 20080169272 - Brandt; Aaron D. ; et al.	2008-07-17
Method And Apparatus For Alignment Of Components Of A Plasma Arc Torch App 20080116179 - Cook; David J. ; et al.	2008-05-22
Method and apparatus for automatic gas control for a plasma arc torch App 20080006614 - Brandt; Aaron D. ; et al.	2008-01-10
Method and apparatus for alignment of components of a plasma arc torch Grant 7,193,174 - Brandt , et al. March 20, 2	2007-03-20
Method and apparatus for alignment of components of a plasma arc torch App 20070045245 - Brandt; Aaron D. ; et al.	2007-03-01
Plasma arc torch providing angular shield flow injection App 20070007256 - Duan; Zheng ; et al.	2007-01-11
Generating discrete gas jets in plasma arc torch applications App 20060289398 - Cook; David Jonathan ; et al.	2006-12-28
Apparatus for cooling plasma arc torch nozzles App 20060289396 - Duan; Zheng	2006-12-28
Automatic gas control for a plasma arc torch App 20060163216 - Brandt; Aaron D. ; et al.	2006-07-27
Method and apparatus for alignment of components of a plasma arc torch App 20060151447 - Brandt; Aaron D. ; et al.	2006-07-13
Method and apparatus for alignment of components of a plasma ARC torch Grant 7,019,255 - Brandt , et al. March 28, 2	2006-03-28
Method and apparatus for alignment of components of a plasma arc torch Grant 6,946,617 - Brandt , et al. September 20, 2	2005-09-20
Method and apparatus for alignment of components of a plasma ARC torch App 20050092718 - Brandt, Aaron D. ; et al.	2005-05-05
Method and apparatus for alignment of components of a plasma arc torch App 20040200810 - Brandt, Aaron D. ; et al.	2004-10-14

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