Jun E Liu

US Patent:

7507503, Mar 24, 2009

Filed:

Dec 8, 2005

Appl. No.:

11/297120

Inventors:

Khalil Amine - Downers Grove IL, US
Jun Liu - Naperville IL, US
Donald R. Vissers - Naperville IL, US
Wenquan Lu - Darien IL, US

Assignee:

U Chicago Argonne LLC - Chicago IL

International Classification:

H01M 6/16

US Classification:

429329, 252 622

Abstract:

The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In some embodiments the additives include a substituted or unsubstituted cyclic or spirocyclic hydrocarbon containing at least one oxygen atom and at least one alkenyl or alkynyl group. When used in electrochemical devices with, e. g. , lithium manganese oxide spinel electrodes or olivine or carbon-coated olivine electrodes, the new electrolytes provide batteries with improved calendar and cycle life.

US Patent:

7785740, Aug 31, 2010

Filed:

Apr 1, 2005

Appl. No.:

11/097810

Inventors:

Khalil Amine - Downers Grove IL, US
Jun Liu - Naperville IL, US
Krishnakumar Jambunathan - Macungie PA, US
Brian Keith Peterson - Fogelsville PA, US
Gennady Dantsin - Allentown PA, US

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

H01M 10/056

US Classification:

429199, 429200

Abstract:

The invention relates to an improvement in a cell which is normally susceptible to damage from overcharging comprised of a negative electrode, a positive electrode, and an electrolyte comprised of an overcharge protection salt carried in a carrier or solvent. Representative overcharge protection salts are embraced by the formula:MQwhere M is an electrochemically stable cation selected from the group consisting of alkali metal, alkaline earth metal, tetraalkylammonium, or imidazolium groups, and Q is a borate or heteroborate cluster and a is the integer 1 or 2.

US Patent:

7968231, Jun 28, 2011

Filed:

May 31, 2006

Appl. No.:

11/444219

Inventors:

Khalil Amine - Downers Grove IL, US
Ilias Belharouak - Westmont IL, US
Jun Liu - Naperville IL, US

Assignee:

U Chicago Argonne, LLC - Chicago IL

International Classification:

H01M 4/131
H01M 4/485
C01G 23/04

US Classification:

4292311, 4292315, 423598

Abstract:

A material comprising a lithium titanate comprising a plurality of primary particles and secondary particles, wherein the average primary particle size is about 1 nm to about 500 nm and the average secondary particle size is about 1 μm to about 4 μm. In some embodiments the lithium titanate is carbon-coated. Also provided are methods of preparing lithium titanates, and devices using such materials.

US Patent:

20060147809, Jul 6, 2006

Filed:

Jan 24, 2006

Appl. No.:

11/338902

Inventors:

Khalil Amine - Downers Grove IL, US
Jun Liu - Naperville IL, US
Donald Vissers - Naperville IL, US
Wenquan Lu - Darien IL, US

International Classification:

H01M 10/40

US Classification:

429326000, 429330000

Abstract:

The present invention relates to non-aqueous electrolytes having electrode stabilizing additives, stabilized electrodes, and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, and an electrode stabilizing additive. In certain electrolytes, the alkali metal salt is a bis(chelato)borate and the additives include substituted or unsubstituted linear, branched or cyclic hydrocarbons comprising at least one oxygen atom and at least one aryl, alkenyl or alkynyl group. In other electrolytes, the additives include a substituted aryl compound or a substituted or unsubstituted heteroaryl compound wherein the additive comprises at least one oxygen atom. There are also provided methods of making the electrolytes and batteries employing the electrolytes. The invention also provides for electrode materials. Cathodes of the present invention may be further stabilized by surface coating the particles of the spinel or olivine with a material that can neutralize acid or otherwise lessen or prevent leaching of the manganese or iron ions. In some embodiments the coating is polymeric and in other embodiments the coating is a metal oxide such as ZrO, TiO, ZnO, WO, AlO, MgO, SiO, SnOAlPO, Al(OH), a mixture of any two or more thereof.

US Patent:

20120239142, Sep 20, 2012

Filed:

Feb 24, 2012

Appl. No.:

13/405119

Inventors:

Jun Liu - Corona CA, US
Luca Pesce - Huntington Beach CA, US
Michael Popp - Irvine CA, US
David Alon - Zichron Yaacov, IL
Mohammad Jafari - Foothill Ranch CA, US
Sergio Delgado - Irvine CA, US

International Classification:

A61F 2/24

US Classification:

623 211

Abstract:

Certain embodiments of the present disclosure provide a prosthetic valve (e.g., prosthetic heart valve) and a valve delivery apparatus for delivery of the prosthetic valve to a native valve site via the human vasculature. The delivery apparatus is particularly suited for advancing a prosthetic heart valve through the aorta (i.e., in a retrograde approach) for replacing a diseased native aortic valve. The delivery apparatus in particular embodiments is configured to deploy a prosthetic valve from a delivery sheath in a precise and controlled manner at the target location within the body.

US Patent:

20210038385, Feb 11, 2021

Filed:

Oct 22, 2020

Appl. No.:

17/077860

Inventors:

- Irvine CA, US
David Alon - Zichron Yaacov, IL
Jun Liu - Corona CA, US
Luca Pesce - Huntington Beach CA, US
Mohammad Jafari - Foothill Ranch CA, US

Assignee:

Edwards Lifesciences Corporation - Irvine CA

International Classification:

A61F 2/24
A61F 2/00

Abstract:

A prosthetic heart valve delivery system can include a catheter portion having a sheath that can cover and uncover the prosthetic heart valve mounted on an inner shaft, a handle having a sheath actuator operatively coupled to a proximal portion of the sheath, the inner shaft extending through the handle, and a shaft retractor releasably coupled to a proximal portion of the handle and fixedly coupled to a proximal portion of the inner shaft. A sheath actuator can move the sheath axially relative to the inner shaft when the shaft retractor is coupled to the handle, and a proximal movement of the sheath relative to the inner shaft can cause the sheath to uncover the prosthetic heart valve. The shaft retractor can be operable to retract the inner shaft and the nosecone proximally relative to the sheath when the shaft retractor is released from the handle.

US Patent:

20200170793, Jun 4, 2020

Filed:

Feb 5, 2020

Appl. No.:

16/783005

Inventors:

- Irvine CA, US
David Alon - Zichron Yaacov, IL
Jun Liu - Corona CA, US
Luca Pesce - Huntington Beach CA, US
Mohammad Jafari - Foothill Ranch CA, US

International Classification:

A61F 2/24
A61F 2/00

Abstract:

A handle for a prosthetic heart valve delivery apparatus includes a housing, a motorized mechanism, and a holding mechanism. The housing is configured to be hand-held by a user and includes a distal opening. The motorized mechanism is disposed within the housing and is configured to be releasably coupled to a proximal end portion of a first shaft of the prosthetic heart valve delivery apparatus. When actuated, the motorized mechanism is configured to rotate the first shaft relative to the housing. The holding mechanism is disposed inside the housing and is configured to engage a proximal end portion of a second shaft of the prosthetic heart valve delivery apparatus such that the second shaft is axially and rotationally fixed relative to the housing, and the first shaft extends through the second shaft.

US Patent:

20170231765, Aug 17, 2017

Filed:

Nov 15, 2016

Appl. No.:

15/351823

Inventors:

- Irvine CA, US
Amanda K. Anderson - Newport Beach CA, US
Michael R. Bialas - Lake Forest CA, US
Gilbert Madrid - Dana Point CA, US
Michael J. Popp - Orange CA, US
Thanh V. Nguyen - Irvine CA, US
Jun Liu - Corona CA, US
Asher L. Metchik - Newport Beach CA, US
Darshin S. Patel - San Juan Capistrano CA, US

International Classification:

A61F 2/24

Abstract:

A prosthetic implant delivery assembly can include a prosthetic implant and an elongate catheter. The prosthetic implant can include an expandable stent portion having a longitudinal axis extending from a first end portion of the stent to a second end portion of the stent. The catheter can include a longitudinal axis extending from a proximal end portion of the catheter to a distal end portion of the catheter and a plurality of arms extending axially from the distal end of the catheter. The first end portion of the stent can be releasably and pivotably coupled to at least one the arms of the catheter such that the stent can pivot about the at least one of the arms so that the longitudinal axis of the stent is tilted relative to the longitudinal axis of the catheter.