Libardo A Perez

age ~73

from The Woodlands, TX

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Desalination Scale Inhibitors
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US Patent:

7862727, Jan 4, 2011
Filed:

Sep 24, 2004
Appl. No.:

10/597925
Inventors:

Nicholas R. Blandford - Willow Grove PA, US
Libardo A. Perez - The Woodlands TX, US
William S. Carey - Wallingford PA, US
Assignee:

General Electric Company - Schenectady NY
International Classification:

C02F 5/14
US Classification:

210699, 203 7, 210701, 252180
Abstract:

A method and composition for processing natural water such as seawater, brackish, and estuarine water wherein the water is concentrated with or without heating comprising adding to the water (I) a water-soluble polymeric phosphonate and (II) a water-soluble polycarboxylate to control scale formation and deposition. Optionally a water -soluble poly[isopropenylphosphonic acid] can also be utilized as component (I) without the addition of component (II).

Magnetic Separation Of Ores Using Sulfonated Polymers
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US Patent:

20030066787, Apr 10, 2003
Filed:

Oct 2, 2001
Appl. No.:

09/969214
Inventors:

Libardo Perez - Morrisville PA, US
Donald Roe - Jamison PA, US
David Polizzotti - Yardley PA, US
International Classification:

B03B005/22
B07B001/00
US Classification:

209/500000
Abstract:

A method of enhancing the magnetic separation of ores is disclosed in which a sulfonated polymeric dispersant is added to an ore slurry just prior to or during the magnetic separation operation. The sulfonated polymeric additive inhibits heterogeneous flocculation during the magnetic separation operation.

Mineral Ore Slurry Viscosity Modification Method
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US Patent:

20040112834, Jun 17, 2004
Filed:

Sep 29, 2003
Appl. No.:

10/473489
Inventors:

Libardo Perez - Morrisville PA, US
David Polizzotti - Yardley PA, US
Ivy Johnson - Lawrenceville NJ, US
International Classification:

C02F001/00
US Classification:

210/696000
Abstract:

A method of decreasing the viscosity of a mineral ore slurry is disclosed. The method comprises adding to a mineral ore slurry a viscosity modifying treatment such as copolymers of maleic anhydride and diisobutylene; copolymers of acrylic acid and allyl hydroxypropyl sulfonate ether, terpolymers of acrylic acid and 2-acrylamide-2-methypropane sulphonic acid salt and t-butyl acrylamide; copolymers of acrylic acid and polyethyleneglycol monoallyl ether sulfate; and copolymers of acrylic acid and 2-acrylamide-2-methypropane sulphonic acid salt; pentaphosphonates; polymethacrylates; and mixtures thereof to the mineral ore slurry.

Non-Corrosive Treatment To Enhance Pressurized And Non-Pressurized Pulverized Coal Combustion
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US Patent:

20040159184, Aug 19, 2004
Filed:

Feb 19, 2003
Appl. No.:

10/368823
Inventors:

Nicholas Blandford - Bensalem PA, US
Libardo Perez - Morrisville PA, US
Assignee:

General Electric Company - Fairfield CT
International Classification:

C21B007/06
US Classification:

075/301000
Abstract:

Methods and compositions for inhibiting corrosion of metal surfaces in a furnace system are disclosed. In one aspect of the invention, pulverized coal is burned as fuel in the presence of a copper ion catalyst/combustion aid. Corrosion is inhibited in these systems by the use of a blend of primary aminoalcohol such as 2-aminoethanol, tertiary aminoalcohol such as triethanol amine, and boric acid or water soluble salt form of the acid.

Non-Corrosive Treatment To Enhance Pressurized And Non-Pressurized Pulvarized Coal Combustion
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US Patent:

20070033864, Feb 15, 2007
Filed:

Oct 17, 2006
Appl. No.:

11/581935
Inventors:

Nicholas Blandford - Bensalem PA, US
Libardo Perez - Morrisville PA, US
Assignee:

General Electric Company - Schenectady NY
International Classification:

C10L 1/20
US Classification:

044456000
Abstract:

Methods and compositions for inhibiting corrosion of metal surfaces in a furnace system are disclosed. In one aspect of the invention, pulverized coal is burned as fuel in the presence of a copper ion catalyst/combustion aid. Corrosion is inhibited in these systems by the use of a blend of primary aminoalcohol such as 2-aminoethanol, tertiary aminoalcohol such as triethanol amine, and boric acid or water soluble salt form of the acid.

Non-Corrosive Treatment To Enhance Pressurized And Non-Pressurized Pulverized Coal Combustion
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US Patent:

20090253085, Oct 8, 2009
Filed:

Jun 15, 2009
Appl. No.:

12/484654
Inventors:

Nicholas Robert Blandford - Bensalem PA, US
Libardo A. Perez - Morrisville PA, US
Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY
International Classification:

C10L 1/12
US Classification:

431 2
Abstract:

Methods and compositions for inhibiting corrosion of metal surfaces in a furnace system are disclosed. In one aspect of the invention, pulverized coal is burned as fuel in the presence of a copper ion catalyst/combustion aid. Corrosion is inhibited in these systems by the use of a blend of primary aminoalcohol such as 2-aminoethanol, tertiary aminoalcohol such as triethanol amine, and boric acid or water soluble salt form of the acid.

Control Of Scale Formation In Aqueous Systems
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US Patent:

54896665, Feb 6, 1996
Filed:

Oct 7, 1994
Appl. No.:

8/319754
Inventors:

William S. Carey - Ridley Park PA
Andrew Solov - Holland PA
Donald T. Freese - Glenside PA
Libardo A. Perez - Morrisville PA
Assignee:

Betz Laboratories, Inc. - Trevose PA
International Classification:

C08G 6302
C02F 510
US Classification:

528272
Abstract:

A method and compounds for inhibiting the formation of scale is disclosed. The method is particularly effective at inhibiting the formation and deposition of calcium scales in circulating aqueous systems such as cooling water systems. The method comprises introducing into the aqueous system a compound of the general formula: ##STR1## wherein R is hydrogen, alkyl, aryl, substituted alkyl or substituted aryl; R' and R" are each independently hydrogen, C. sub. 1-4 alkyl or C. sub. 1-4 substituted alkyl; Z is 0, S, NH, or NR, where R is as described above; n is a positive integer greater than 1; f is a positive integer; and M is hydrogen, a water soluble cation (e. g. , NH. sub. 4. sup. +, alkali metal) or a C. sub. 1 -C. sub. 3 alkyl group.

Composition For Controlling Scale Formation In Aqueous Systems
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US Patent:

53783905, Jan 3, 1995
Filed:

Mar 11, 1994
Appl. No.:

8/209806
Inventors:

Libardo A. Perez - Morrisville PA
Donald T. Freese - Glenside PA
Judith B. Rockett - Perkasie PA
William S. Carey - Ridley Park PA
Assignee:

Betz Laboratories, Inc. - Trevose PA
International Classification:

C02F 510
US Classification:

252180
Abstract:

A method and composition for controlling the formation and deposition of scale forming salts in a circulating aqueous system is described wherein a treatment solution of a substoichiometric amount of polyepoxysuccinic acid in combination with agaric acid is employed.