Qian Larry Wang

US Patent:

20220195549, Jun 23, 2022

Filed:

Dec 14, 2021

Appl. No.:

17/550951

Inventors:

- Evanston IL, US
Qian Wang - Mt. Prospect IL, US
Arman Mohammad Khan - Evanston IL, US
Tobias Vela Martin - Evanston IL, US

International Classification:

C21D 8/02
C22C 38/22
C22C 38/24
C21D 1/58
C21D 1/60
C21D 1/613

Abstract:

Methods for forming carbon-based lubricious and/or wear-protective films in situ on the surface of steel alloys are provided. The methods use chromium-containing steel alloys, molybdenum-containing steel alloys, and steel alloys that contain both copper and nickel. When such alloys are subjected to a rubbing motion in the presence of a hydrocarbon fluid, the chromium, molybdenum, copper, and nickel in the steel alloy catalyzes the formation of solid carbon-containing films that reduce the friction, wear, or both of the contacting surfaces.

US Patent:

20210324505, Oct 21, 2021

Filed:

Apr 15, 2021

Appl. No.:

17/231754

Inventors:

- Evanston IL, US
Qian Wang - Mt. Prospect IL, US
Erica Marie Hartmann - Chicago IL, US
Arman Mohammad Khan - Evanston IL, US
Semyon Vaynman - Highland Park IL, US
Dieter Isheim - Chicago IL, US

International Classification:

C22C 38/16
C22C 38/04
C22C 38/08
C22C 38/06
C22C 38/02
C22C 38/12
C22C 38/14

Abstract:

A method of reducing viability of a microbe is provided. An illustrative method comprises contacting a microbe with an antimicrobial surface comprising a copper-alloy steel comprising an iron matrix and copper nanoprecipitates distributed throughout the iron matrix, wherein the copper-alloy steel comprises: Cu in a range from 0.5 weight % to 5.0 weight %; C in a range from 0.03 weight % to 0.10 weight %; Mn in a range from 0.20 weight % to 5.0 weight %; Ni in a range from 0.0 weight % to 6.0 weight %; Al in a range from 0.0 weight % to 4.0 weight %; Nb in a range from 0.0 weight % to 0.10 weight %; Si in a range from 0.0 weight % to 2.0 weight %; Mo in a range from 0.0 weight % to 2.0 weight %; Ti in a range from 0.0 weight % to 2.0 weight %; V in a range from 0.0 weight % to 2.0 weight %; Cr in a range from 0.0 weight % to 8.0 weight %; and a balance of Fe. The antimicrobial surfaces are also provided.

US Patent:

20210317381, Oct 14, 2021

Filed:

Apr 13, 2021

Appl. No.:

17/228920

Inventors:

- Evanston IL, US
Qian Jane Wang - Mount Prospect IL, US
Qiang Ma - Evanston IL, US
Arman Mohammad Khan - Evanston IL, US

International Classification:

C10M 177/00
C10M 129/34
C10M 129/32

Abstract:

A lubricant composition includes a base lubricant and a plurality of lubricant additive molecules functioning as precursor molecules to induce tribopolymerization and forming in situ protective tribofilm with desirable robustness and low shear resistance. Each lubricant additive molecule includes one or more surface-active groups attractable to target surface, and a carbon containing component operable connected to the one or more surface active groups. The carbon containing component comprise a carbon ring structure having a high ring strain that is metastable and activatable with a ring-opening reaction. A less stable carbon ring structure is more readily activated to the intermediate state, preferable to form more active fragments. Increasing the adsorption strength further is beneficial to prolonging the residence time of additive molecules on the target surface, thereby facilitating the dissociation of molecules and subsequent polymerization.

US Patent:

20200362069, Nov 19, 2020

Filed:

Feb 6, 2019

Appl. No.:

16/963731

Inventors:

- Evanston IL, US
Yanshan Gao - Evanston IL, US
Tracy L. Lohr - Houston TX, US
Qian Wang - Mt. Prospect IL, US
Yip-Wah Chung - Wilmette IL, US

International Classification:

C08F 110/02
C08F 210/02
C08F 210/14

Abstract:

Low molecular weight, highly branched polyolefins are provided. Also provided are catalyst-mediated methods of making the low molecular weight, highly branched polyolefins and a catalyst system for carrying out the methods. The catalyst system is a homogeneous catalytic system that includes a single-site organozirconium complex and hydrocarbon-soluble perfluoroarylborate co-catalyst that is highly active for the oligomerization of olefin monomers in non-polar media.

US Patent:

20190367832, Dec 5, 2019

Filed:

Jul 25, 2019

Appl. No.:

16/521631

Inventors:

- Evanston IL, US
Qian Wang - Mount Prospect IL, US
Blake A. Johnson - Evanston IL, US

International Classification:

C10M 129/32
C10M 139/04
C10M 129/06
C10M 133/06
C10M 129/28

Abstract:

A lubricant composition includes a base lubricant and a plurality of lubricant additive molecules. Each molecule includes a surface active group attractable to a target surface, wherein the surface active group comprises a carboxyl group, a siloxyl group, an amine group, or a mixture thereof, and a carbon containing component connected to the surface active group, wherein the carbon containing component comprises a carbon ring, wherein the surface active group and the carbon containing component are adapted such that the carbon film is formed in situ on the target surface of the target machine only when tribological energy activates the lubricant additive to unravel the carbon containing component under a pressure and a temperature during operation.

US Patent:

20170122820, May 4, 2017

Filed:

Oct 27, 2016

Appl. No.:

15/335744

Inventors:

- Evanston IL, US
Qian Wang - Mt. Prospect IL, US

International Classification:

G01L 1/14
G01N 11/00

Abstract:

Devices and methods employing interdigitated dielectrostrictive sensors are disclosed for measuring shear stress, and obtaining strain-dielectric and stress-dielectric coefficients to monitor a process, and examine quality of dielectric materials, including but not limited to polymer, composite, grease, food, biofluids and etc. The dielectrostrictive sensor includes at least two interdigitated sensors, each having at least two electrodes and a central axis. The central axes are disposed in a common plane and are oriented at different directions.

US Patent:

20170088788, Mar 30, 2017

Filed:

Sep 30, 2016

Appl. No.:

15/281471

Inventors:

- Evanston IL, US
Qian Wang - Mt. Prospect IL, US
Yip-Wah Chung - Wilmette IL, US
Xuan Dou - Evanston IL, US

International Classification:

C10M 125/02
C10M 139/04

Abstract:

A method for forming a lubrication material using self-dispersed crumpled graphene balls as additives in a lubricant base fluid for friction and wear reduction. The lubricant base fluid may be, for example, a polyalphaolefin type-4 (PAO4) oil. After the crumpled graphene balls are added as additives in the lubricant base fluid, the lubricant base fluid with the additives are sonicated for a sonicating time period, so that the crumpled graphene balls are self-dispersed in the lubricant base fluid to improve friction and wear properties of the lubricant base fluid. In some cases, a dispersing agent, such as Triethoxysilane, may be added in the lubricant base fluid to enhance stability of dispersion of the crumpled graphene balls in the lubricant base fluid. The crumpled graphene balls may stay stably dispersed in the lubricant base fluid between a lower temperature (such as −15 C.) to a higher temperature (such as 90 C.).

US Patent:

20160199899, Jul 14, 2016

Filed:

Mar 22, 2016

Appl. No.:

15/077056

Inventors:

- DEARBORN MI, US
JIAN CAO - WILMETTE IL, US
QIAN WANG - MT. PROSPECT IL, US
RAJESH TALWAR - ST. LOUIS MO, US
DONALD J. GRZINA - ST. LOUIS MO, US
TIFFANY DAVIS LING - PLYMOUTH MI, US
PINZHI LIU - DUNLAP IL, US

International Classification:

B21D 24/04

Abstract:

A forming tool stamps sheet metal blanks into a desired shape. A contoured surface is defined for the forming tool so that respective portions of the metal blank flow over the contoured surface during forming. An intrinsic material flow pattern resulting from the contoured surface is compared to a desired flow in order to identify regions of the contoured surface having an insufficient flow that creates areas in the formed metal blank receiving less than a desired amount of metal. A surface microtexture is applied onto the contoured surface in a pattern selected to increase metal flow along the identified regions by providing a coefficient of friction in the identified regions that is reduced relative to adjacent regions of the contoured surface.