Chen Chen

US Patent:

20200256587, Aug 13, 2020

Filed:

Apr 29, 2020

Appl. No.:

16/862289

Inventors:

Keith Lovegrove - O'Connor, AU
- Oakland CA, US
Richard Edward Wirz - Los Angeles CA, US
Hamarz Aryafar - Los Angeles CA, US
Chen Chen - Los Angeles CA, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

F24S 60/00
F24S 23/74
F28D 20/00
F24S 20/20
F04B 45/04
B65G 5/00

Abstract:

A reservoir for containing a fluid includes a cylindrical wall sized to engage a shaft bored into ground, a bottom end cap fixed to a lower end of the cylindrical wall and a top end cap fixed to an upper end of the cylindrical wall. The top end cap is concave such that the top end cap extends below a top end of the cylindrical wall. The bottom end cap, the top end cap, and the cylindrical wall define a subterranean chamber. A plug made of a composite material is on the top end cap, with a lower face disposed on the concave top end cap and a peripheral face engaging the shaft. At least one pressure port extends downwardly into the shaft and through the plug and the top end cap, defining a fluid path to the subterranean chamber.

US Patent:

20180180325, Jun 28, 2018

Filed:

Jun 27, 2016

Appl. No.:

15/739125

Inventors:

- Oakland CA, US
Richard Edward Wirz - Los Angeles CA, US
Hossein Pirouz Kavehpour - Los Angeles CA, US
Hamarz Aryafar - Los Angeles CA, US
Chen Chen - Los Angeles CA, US
Gopinath Warrier - Reseda CA, US
Dante Adam Simonetti - Redondo Beach CA, US
Keith Lovegrove - O'Connor, AU
Joshua Jordan - O'Connor, AU
Jonathon Kennedy - O'Connor, AU

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

F28D 20/00
B65G 5/00

Abstract:

Thermochemical energy storage (TCES) for concentrating solar power (CSP) systems provides higher energy density than sensible energy storage systems. An ammonia-based TCES system dissociates endothermically into hydrogen and nitrogen. The stored energy is released when supercritical hydrogen and nitrogen react exothermically to synthesize ammonia. Prior ammonia synthesis systems are unable to produce temperatures consistent with modern power blocks requiring a working fluid, for example steam or carbon dioxide, to be heated to greater than 600 C., for example about 650 C. An ammonia synthesis system heats steam from, for example 350 C. to 650 C. under pressure of about 26 MPa. The hydrogen and nitrogen are preheated with a flow of supercritical fluid prior to the synthesis step to provide reaction rates sufficient to heat power block working fluid to the desired temperature.

US Patent:

20160248102, Aug 25, 2016

Filed:

May 2, 2016

Appl. No.:

15/144650

Inventors:

- Chicago IL, US
Jianglan Shui - Darien IL, US
Chen Chen - Darien IL, US

Assignee:

UChicago Argonne, LLC - Chicago IL

International Classification:

H01M 4/90
H01M 8/1004
H01M 8/1018
H01M 4/92
H01M 8/1023
H01M 10/0568
H01M 8/0263
H01M 4/38
H01M 2/16
H01M 8/02
H01M 10/0525
H01M 10/0569
H01M 12/08
H01M 8/1039

Abstract:

A nanofibrous catalyst and method of manufacture. A precursor solution of a transition metal based material is formed into a plurality of interconnected nanofibers by electro-spinning the precursor solution with the nanofibers converted to a catalytically active material by a heat treatment. Selected subsequent treatments can enhance catalytic activity.

US Patent:

20160208186, Jul 21, 2016

Filed:

Jan 18, 2016

Appl. No.:

14/997808

Inventors:

Alan M. Schilowitz - Highland Park NJ, US
Man Kit Ng - Basking Ridge NJ, US
David J. Baillargeon - Cherry Hill NJ, US
Chen Chen - State College PA, US
Harry R. Allcock - State College PA, US
Andrew R. Hess - York PA, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10M 137/16
C07F 9/6593
C10M 169/04
C10M 107/02
C10M 137/10

Abstract:

A method for improving wear control in an engine or other mechanical component lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that includes a lubricating oil base stock as a major component; and at least one phosphazene represented by the formulaas a minor component. In the above formula, Q is nitrogen, sulfur or oxygen; a is a value from about 2 to about 6, c is a value from about 2 to about 6, e is a value from about 2 to about 6, g is a value from about 2 to about 6, i is a value from about 2 to about 6, and k is a value from about 2 to about 6; b is a value of 2a+q, d is a value of 2c+r, f is a value of 2e+s, h is a value of 2g+t, j is a value of 2i+u, and l is a value of 2k+v; q, r, s, t, u and v are independently a value of 0 or −2; with the proviso that not all of a, c, e, g, i and k are the same value. A lubricating oil having a composition that includes a lubricating oil base stock as a major component; and at least one phosphazene represented by the above formula as a minor component. The lubricating oil is useful in internal combustion engines.

US Patent:

20150367049, Dec 24, 2015

Filed:

Jun 18, 2014

Appl. No.:

14/308177

Inventors:

Keming Chen - Torrance CA, US
Chen Chen - Santa Barbara CA, US
Frank Lin - Torrance CA, US

International Classification:

A61M 1/12
A61M 1/10

Abstract:

An implantable blood pump includes motor control circuitry and power electronics circuitry integrated within the implantable pump body. The motor control circuitry and power electronics circuitry is configured to energize and control motor windings to rotate the pump rotor and impeller. Additional control circuitry and power electronics circuitry may be integrated within the pump housing to energize and control magnetic bearings of a magnetic levitation pump. A percutaneous cable coupled between the implantable blood pump and an extracorporeal monitor includes a reduced number of leads to provide power and control signals to the implantable blood pump. Wireless communication between the extracorporeal monitor and the integrated power electronics and control circuitry facilitates the use of a percutaneous cable with as few as two leads for providing power to the implantable pump.

US Patent:

20140093790, Apr 3, 2014

Filed:

Sep 28, 2012

Appl. No.:

13/630930

Inventors:

Di-Jia Liu - Elmhurst IL, US
Jianglan Shui - Darien IL, US
Chen Chen - Darien IL, US

International Classification:

H01M 4/88
H01M 8/10
H01M 8/22
H01M 4/86
H01M 4/90
B82Y 30/00

US Classification:

429405, 429532, 429528, 429527, 429531, 429482, 502101, 502 5, 502 74, 977948, 977780, 977896

Abstract:

A nanofibrous catalyst and method of manufacture. A precursor solution of a transition metal based material is formed into a plurality of interconnected nanofibers by electro-spinning the precursor solution with the nanofibers converted to a catalytically active material by a heat treatment. Selected subsequent treatments can enhance catalytic activity.