Xiangdong Feng from 1876 Richards Pl #8, Upland, CA 91784, Phone: 9099850098

Us Patents

Method Of Forming Particles For Use In Chemical-Mechanical Polishing Slurries And The Particles Formed By The Process
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US Patent:

6596042, Jul 22, 2003
Filed:

Nov 16, 2001
Appl. No.:

09/992485
Inventors:

Xiangdong Feng - Broadview Heights OH
Yie-Shein Her - Canandaigua NY
Assignee:

Ferro Corporation - Cleveland OH
International Classification:

C09K 314
US Classification:

51309, 51307, 106 3, 423263
Abstract:

The present invention provides a process for producing particles suitable for use as abrasives in chemical-mechanical polishing slurries. The process according to the invention includes adding a crystallization promoter such as Ti[OCH(CH ) )] to an aqueous cerium salt solution, adjusting the pH of the solution to higher than 7. 0 using one or more bases, and subjecting the solution to hydrothermal treatment at a temperature of from about 90Â C. to about 500Â C. to produce the particles.

Process For Producing Abrasive Particles And Abrasive Particles Produced By The Process
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US Patent:

6818030, Nov 16, 2004
Filed:

Sep 25, 2002
Appl. No.:

10/255136
Inventors:

Xiangdong Feng - Broadview Heights OH
Yie-Shein Her - Canandaigua NY
Assignee:

Ferro Corporation - Cleveland OH
International Classification:

C09K 314
US Classification:

51307, 51309, 106 3, 423263, 438692, 438693
Abstract:

The present invention provides a process for producing particles suitable for use as abrasives in chemical-mechanical polishing slurries. The process according to the invention includes mixing at least one crystallization promoter such as Ti[OCH(CH ) )] with at least one cerium compound and at least one solvent, and subjecting said mixture to hydrothermal treatment at a temperature of from about 60Â C. to about 700Â C. to produce the particles. Particles formed in accordance with the present invention exhibit a large crystallite size, and can be used to polish silicon-containing substrates to a high degree of planarity at a relatively high rate.

Method Of Removing Spectator Ions From Aqueous Suspension Of Solid Particles
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US Patent:

7318897, Jan 15, 2008
Filed:

Aug 13, 2004
Appl. No.:

10/917829
Inventors:

Xiangdong Feng - Broadview Heights OH, US
Christopher J. Szepesi - State College PA, US
Mike S. H. Chu - Lewiston NY, US
James H. Adair - State College PA, US
Assignee:

Ferro Corporation - Cleveland OH
The Penn State Research Foundation - University Park PA
International Classification:

B01D 11/02
C01G 23/00
C01F 11/00
US Classification:

210639, 423 70, 423 71, 423598, 423636, 428403
Abstract:

The present invention provides a method of removing spectator ions and contaminants from aqueous suspensions of solid particles. In accordance with the method of the invention, the solid particles are transported across a phase boundary into a non-polar organic solvent, leaving the spectator ions and contaminants in the aqueous phase. To facilitate the efficient transportation of the solid particles across the phase boundary, the surface of the solid particles is coated with an amphiphilic polyelectrolyte. If desired, the solid particles can be recovered from the organic phase by evaporating the organic solvent.

Hydrothermal Synthesis Of Cerium-Titanium Oxide For Use In Cmp
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US Patent:

7666239, Feb 23, 2010
Filed:

Nov 18, 2005
Appl. No.:

11/283530
Inventors:

Xiangdong Feng - Upland CA, US
Yie-Shein Her - Canandaigua NY, US
Yi Yang - Broadview Heights OH, US
Assignee:

Ferro Corporation - Cleveland OH
International Classification:

C09K 3/14
C09G 1/02
C01F 17/00
C01B 15/04
US Classification:

51309, 51307, 106 3, 423263, 423584
Abstract:

The present invention provides a method of synthesizing abrasive particles and methods of using the same in chemical mechanical polishing slurry applications. The nanosized abrasive particles according to the invention are produced by hydrothermal synthesis using an insoluble source of cerium. The crystallites of the particles include cerium ions and titanium ions.

Substantially Spherical Composite Ceria/Titania Particles
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US Patent:

7687401, Mar 30, 2010
Filed:

May 1, 2006
Appl. No.:

11/380980
Inventors:

Xiangdong Feng - Upland CA, US
Yie-Shein Her - Canandaigua NY, US
Anthony C. Sutorik - Milan MI, US
M. Sharon Paras - Howell MI, US
Assignee:

Ferro Corporation - Cleveland OH
Nanocerox, Inc. - Ann Arbor MI
International Classification:

H01L 21/302
US Classification:

438693, 438692, 51309
Abstract:

The present invention provides substantially spherical composite ceria/titania particles, a method of forming the same, and chemical mechanical polishing compositions comprising such particles. The substantially spherical particles include a substantially crystalline core portion including one or more crystallites having a cubic lattice structure including CeTiO, where x is

Synthesis Of Nickel Nanopowders
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US Patent:

7819939, Oct 26, 2010
Filed:

Aug 7, 2006
Appl. No.:

11/462729
Inventors:

Yi Yang - Broadview Heights OH, US
Xiangdong Feng - Upland CA, US
Yang Xiang - Garfield Heights OH, US
Assignee:

Ferro Corporation - Cleveland OH
International Classification:

B22F 9/24
B22F 9/18
C22B 5/00
C22B 23/00
B01J 23/00
US Classification:

75374, 502337, 423138, 423140
Abstract:

The invention relates to a method of making a nickel powder having an average particle size of less than about 100 nanometers, comprising contacting, at a temperature of about 50 C. to about 95 C. , a reduction solution with a nickel solution to form a reaction mixture. The reduction solution comprises a base and a reducing agent. The nickel solution comprises a nickel compound water, a nucleation agent, a surfactant or dispersant, and combinations thereof. The yield of nickel nanoparticles is greater than about 90% relative to starting moles of nickel compound. The nickel powder is suitable for use in electronics applications and sintered metal applications.

Cementitious Formulations And Products
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US Patent:

8147610, Apr 3, 2012
Filed:

Oct 2, 2008
Appl. No.:

12/244753
Inventors:

Xiangdong Feng - Upland CA, US
Meiling Gong - Upland CA, US
Chinmay Avinash Gowardhan - Riverside CA, US
Chongjun Jiang - Alta Loma CA, US
Michael John Julius - Rancho Cucamonga CA, US
Amitabha Kumar - Claremont CA, US
Shannon Marie Labernik - Rancho Cucamonga CA, US
Xiangyuan Liu - Rancho Cucamonga CA, US
Liyan Ma - Alta Loma CA, US
Basil Taha Naji - Upland CA, US
Kalynne Hitzeman Paradis - Fontana CA, US
David John Sharman - Rancho Cucamonga CA, US
Assignee:

James Hardie Technology Limited - Dublin
International Classification:

C04B 14/00
C04B 16/00
C04B 24/00
C04B 28/10
C04B 7/00
C04B 7/34
C04B 28/00
C04B 32/00
C04B 18/06
C04B 2/00
US Classification:

106721, 106812, 106638, 106796, 106705
Abstract:

Cementitious formulations and their products with enhanced reactivity are provided. Formulations in certain embodiments may include at least one calcium source, a reactant and a filler in a hydrated environment, wherein the reactant, in one form, is crystalline silica that has been modified for reactivity. Enhancement of a reactant may include one or more modifications to its content, grind and/or the cement to silica ratio, as well as addition of one or more additives in the formulation, additives in the form of at least one alumina source, defoamer, catalyst and/or a clay.

Cementitious Formulations And Products
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US Patent:

8574360, Nov 5, 2013
Filed:

Feb 24, 2012
Appl. No.:

13/405173
Inventors:

Xiangdong Feng - Upland CA, US
Meiling Gong - Upland CA, US
Chinmay Avinash Gowardhan - Riverside CA, US
Chongjun Jiang - Alta Loma CA, US
Michael John Julius - Rancho Cucamonga CA, US
Amitabha Kumar - Claremont CA, US
Shannon Marie Labernik - Rancho Cucamonga CA, US
Xiangyuan Liu - Rancho Cucamonga CA, US
Liyan Ma - Alta Loma CA, US
Basil Taha Naji - Upland CA, US
Kalynne Hitzeman Paradis - Fontana CA, US
David John Sharman - Rancho Cucamonga CA, US
Assignee:

James Hardie Technology Limited - Dublin
International Classification:

C04B 14/00
C04B 16/00
C04B 24/00
C04B 28/10
C04B 7/00
C04B 7/34
C04B 28/00
C04B 32/00
C04B 18/06
C04B 2/00
US Classification:

106721, 106638, 106705, 106796, 106812
Abstract:

Cementitious formulations and their products with enhanced reactivity are provided. Formulations in certain embodiments may include at least one calcium source, a reactant and a filler in a hydrated environment, wherein the reactant, in one form, is crystalline silica that has been modified for reactivity. Enhancement of a reactant may include one or more modifications to its content, grind and/or the cement to silica ratio, as well as addition of one or more additives in the formulation, additives in the form of at least one alumina source, defoamer, catalyst and/or a clay.