Carl T Nelson

US Patent:

7033406, Apr 25, 2006

Filed:

Apr 12, 2001

Appl. No.:

09/833609

Inventors:

Richard Dean Weir - Cedar Park TX, US
Carl Walter Nelson - Austin TX, US

Assignee:

Eestor, inc. - Cedar Park TX

International Classification:

H01M 6/00

US Classification:

296235, 296231

Abstract:

An electrical-energy-storage unit (EESU) has as a basis material a high-permittivity composition-modified barium titanate ceramic powder. This powder is double coated with the first coating being aluminum oxide and the second coating calcium magnesium aluminosilicate glass. The components of the EESU are manufactured with the use of classical ceramic fabrication techniques which include screen printing alternating multilayers of nickel electrodes and high-permittivitiy composition-modified barium titanate powder, sintering to a closed-pore porous body, followed by hot-isostatic pressing to a void-free body. The components are configured into a multilayer array with the use of a solder-bump technique as the enabling technology so as to provide a parallel configuration of components that has the capability to store electrical energy in the range of 52 kWh. The total weight of an EESU with this range of electrical energy storage is about 336 pounds.

US Patent:

7466536, Dec 16, 2008

Filed:

Aug 13, 2004

Appl. No.:

10/917144

Inventors:

Richard Dean Weir - Cedar Park TX, US
Carl Walter Nelson - Austin TX, US

Assignee:

EEStor, Inc. - Cedar Park TX

International Classification:

H01G 4/06
H01G 4/30

US Classification:

361311, 3613014, 361323

Abstract:

An electrical-energy-storage unit (EESU) has as a basis material a high-permittivity composition-modified barium titanate ceramic powder. This powder is single coated with aluminum oxide and then immersed in a matrix of poly(ethylene terephthalate) (PET) plastic for use in screen-printing systems. The ink that is used to process the powders via screen-printing is based on a nitrocellulose resin that provide a binder burnout, sintering, and hot isostatic pressing temperatures that are allowed by the PET plastic. These lower temperatures that are in the range of 40 C. to 150 C. also allows aluminum powder to be used for the electrode material. The components of the EESU are manufactured with the use of conventional ceramic and plastic fabrication techniques which include screen printing alternating multilayers of aluminum electrodes and high-permittivity composition-modified barium titanate powder, sintering to a closed-pore porous body, followed by hot-isostatic pressing to a void-free body. The 31,351 components are configured into a multilayer array with the use of a solder-bump technique as the enabling technology so as to provide a parallel configuration of components that has the capability to store at least 52. 22 kWh of electrical energy.

US Patent:

7595109, Sep 29, 2009

Filed:

Apr 10, 2006

Appl. No.:

11/400875

Inventors:

Richard Dean Weir - Cedar Park TX, US
Carl Walter Nelson - Austin TX, US

Assignee:

EEStor, Inc. - Cedar Park TX

International Classification:

B32B 5/66

US Classification:

428403, 428404, 428405, 428406, 428407, 428209, 429247, 296231, 296235

Abstract:

An electrical-energy-storage unit (EESU) has as a basis material a high-permittivity composition-modified barium titanate ceramic powder. This powder is double coated with the first coating being aluminum oxide and the second coating calcium magnesium aluminosilicate glass. The components of the EESU are manufactured with the use of classical ceramic fabrication techniques which include screen printing alternating multilayers of nickel electrodes and high-permittivitiy composition-modified barium titanate powder, sintering to a closed-pore porous body, followed by hot-isostatic pressing to a void-free body.

US Patent:

7648687, Jan 19, 2010

Filed:

Jun 15, 2006

Appl. No.:

11/453581

Inventors:

Richard D. Weir - Cedar Park TX, US
Carl W. Nelson - Austin TX, US

Assignee:

EEStor, Inc. - Cedar Park TX

International Classification:

B01D 3/00
B01D 11/00
C02F 1/26
B01D 15/00
C02F 1/44
B01D 11/04
B01J 39/00
C02F 1/42
G21F 9/04
C01F 1/00
C01F 5/00
C01F 11/00
C22B 26/20
C22B 26/10
C22B 26/12
C01B 21/48
C01D 9/00
C01D 15/10
C01F 5/38
C01F 7/66
C01F 11/36
C01B 21/06

US Classification:

423157, 423155, 423181, 423395, 423397, 423409, 210633, 210639, 210642, 210660, 210663, 210681

Abstract:

Purification techniques have been developed for ceramic powder precursors, e. g. , barium nitrate. These techniques can be performed using one or more of the following operations: () removal of impurities by precipitation or coprecipitation and separation using a nonmetallic-ion-containing strong base, e. g. , tetraalkylammonium hydroxides; () reduction of higher oxidation-state-number oxymetal ions and subsequent precipitation as hydroxides that are separated from the solution; and () use of liquid-liquid exchange extraction procedures to separate certain impurities.

US Patent:

7729811, Jun 1, 2010

Filed:

Aug 4, 2006

Appl. No.:

11/499594

Inventors:

Richard D. Weir - Cedar Park TX, US
Carl W. Nelson - Austin TX, US

Assignee:

EEStor, Inc. - Cedar Park TX

International Classification:

G06F 19/00
H01G 4/20

US Classification:

700295, 700286, 700292, 361313, 29 2542, 29 2541

Abstract:

The use of electrical energy storage unit (EESU) technology can provide power averaging for utility grids. Such EESUs can also be used to construct a system capable of storing electrical energy over specified periods (e. g. , 24 hours) to provide peak power to homes, commercial sites, and industrial sites. By charging these power averaging units during non-peak times and then delivering the energy during peak-demands times, more efficient utilization of the present utility-grid power-generating plants and the already existing power transmission lines will be accomplished. These systems also have the capability of isolating users from utility-grid power failures, transients, and AC noise.

US Patent:

7914755, Mar 29, 2011

Filed:

Mar 7, 2006

Appl. No.:

11/369255

Inventors:

Richard D. Weir - Cedar Park TX, US
Carl W. Nelson - Austin TX, US

Assignee:

EEStor, Inc. - Cedar Park TX

International Classification:

C22B 3/00

US Classification:

423 1, 423 71, 423263, 423598, 423599, 423352, 423356, 4235921, 42359416, 423608, 501134, 501102, 501105, 501135, 501136, 501137

Abstract:

Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and the use of a nonmetal-ion-containing strong base can be used in a coprecipitation procedure for the preparation of ceramic powders. Examples of the precipitants used include tetraalkylammonium hydroxides. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.

US Patent:

8145362, Mar 27, 2012

Filed:

May 21, 2010

Appl. No.:

12/785380

Inventors:

Richard D. Weir - Cedar Park TX, US
Carl W. Nelson - Cedar Park TX, US

Assignee:

EEStor, Inc. - Cedar Park TX

International Classification:

G06F 19/00

US Classification:

700295, 700286, 700292, 361313, 29 2541, 29 2542

Abstract:

As system is disclosed for providing power averaging for the utility grids and more specifically to utilizing a unique EESU unit with the capability to store electrical energy over 24 hour periods each day and provide power averaging to homes, commercial, and industrial sites to reduce the peak power requirements. Charging such power averaging units during the non-peak times and delivering the energy during the peak-demands times provides for more efficient utilization of utility-grid power-generating plants and the already existing power transmission lines. Such a unit may also have the capability of isolating the users from utility-grid power failures, transients, and AC noise.

US Patent:

7993611, Aug 9, 2011

Filed:

Aug 2, 2006

Appl. No.:

11/497744

Inventors:

Richard D. Weir - Cedar Park TX, US
Carl W. Nelson - Austin TX, US

Assignee:

EEStor, Inc. - Cedar Park TX

International Classification:

C22B 31/00

US Classification:

423 1, 423352, 4235921, 423598, 423599, 42359416, 423608, 423356, 501134, 501135, 501136, 501137

Abstract:

Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and an ammonium oxalate precipitant can be used in a coprecipitation procedure for the preparation of ceramic powders. Both the precursor solution and the ammonium oxalate precipitant solution are at neutral or near-neutral pH. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.