Joseph T Dusek DeceasedLemont, IL

4749632, Jun 7, 1988

Oct 23, 1986

6/922429

Brian K. Flandermeyer - Bolingbrook IL
Roger B. Poeppel - Glen Ellyn IL
Joseph T. Dusek - Downers Grove IL
Harlan U. Anderson - Rolla MO

The United States of America as represented by the United States
Department of Energy - Washington DC

H01M 800
C04B 3505

429 12

An electronically conductive interconnect layer for use in a fuel cell or other electrolytic device is formed with sintering additives to permit densification in a monolithic structure with the electrode materials. Additions including an oxide of boron and a eutectic forming composition of Group 2A metal fluorides with Group 3B metal fluorides and Group 2A metal oxides with Group 6B metal oxides lower the required firing temperature of lanthanum chromite to permit densification to in excess of 94% of theoretical density without degradation of electrode material lamina. The monolithic structure is formed by tape casting thin layers of electrode, interconnect and electrolyte materials and sintering the green lamina together under common densification conditions.

4244898, Jan 13, 1981

Mar 30, 1979

6/025629

Gautam Bandyopadhyay - Naperville IL
Joseph T. Dusek - Downers Grove IL

The United States of America as represented by the United
StatesDepartment of Energy - Washington DC

C04B 2102

264 43

Porous, rigid separators for electrochemical cells are prepared by first calcining particles of ceramic material at temperatures above about 1200. degree. C. for a sufficient period of time to reduce the sinterability of the particles. A ceramic powder that has not been calcined is blended with the original powder to control the porosity of the completed separator. The ceramic blend is then pressed into a sheet of the desired shape and sintered at a temperature somewhat lower than the calcination temperature. Separator sheets of about 1 to 2. 5 mm thickness and 30 to 70% porosity can be prepared by this technique. Ceramics such as yttria, magnesium oxide and magnesium-aluminum oxide have advantageously been used to form separators by this method.

4404154, Sep 13, 1983

Nov 30, 1981

6/326088

Richard M. Arons - Wheaton IL
Joseph T. Dusek - Downers Grove IL

C04B 3324

264 62

Ceramic shapes having impermeable tungsten coatings can be used for containing highly corrosive molten alloys and salts. The shapes are prepared by coating damp green ceramic shapes containing a small amount of yttria with a tungsten coating slip which has been adjusted to match the shrinkage rate of the green ceramic and which will fire to a theoretical density of at least 80% to provide a impermeable coating.

6117808, Sep 12, 2000

Jan 21, 1998

9/010424

P. Subraya Maiya - Darien IL
John J. Picciolo - Lockport IL
Joseph T. Dusek - Lombard IL

The University of Chicago - Chicago IL

B01J 2028
C04B 3501

502 4

An improved highly oxygen permeable substrate is provided comprising Sr--Fe--Co-oxide and a metal combined with said material. Also provided is a method for producing an improved membrane to facilitate oxidation of compounds comprising combining metal or metal alloys with Sr--Fe--Co-oxide to create a mixture, and sintering the mixture so as to allow the metal to melt within the mixture. The membrane is also utilized in a method for converting methane to syngas whereby a fluid containing oxygen is contacted to a first surface of the membrane for a sufficient period of time so as to cause some of the oxygen to be transported to a second surface of the membrane; and contacting methane to the second surface for a sufficient period of time to cause oxidation of the methane.

5356869, Oct 18, 1994

Dec 17, 1990

7/629089

Donald W. Capone - Bolingbrook IL
Joseph Dusek - Downers Grove IL

Arch Development Corporation - Chicago IL

C01G 302
H01L 3924

505430

Powder of a ceramic superconducting material is synthesized such that each particle of the powder is a single crystal having a flake-like, nonsymmetric morphology such that the c-axis is aligned parallel to the short dimension of the flake. Nonflake powder is synthesized by the normal methods and is pressed into pellets or other shapes and fired for excessive times to produce a coarse grained structure. The fired products are then crushed and ground producing the flake-like powder particles which exhibit superconducting characteristics when aligned with the crystal lattice.

H12394, Oct 5, 1993

Aug 23, 1990

7/571400

Joseph T. Dusek - Lombard IL

The United States of America as represented by the United States
Department of Energy - Washington DC

C04B 3564

264 63

A process for extruding a superconducting metal oxide composition YBa. sub. 2 Cu. sub. 3 O. sub. 7-x provides a wire (tube or ribbon) having a cohesive mass and a degree of flexibility together with enhanced electrical properties. Wire diameters in the range of 6-85 mils have been produced with smaller wires on the order of 10 mils in diameter exhibiting enhanced flexibility for forming braided, or multistrand, configurations for greater current carrying capacity. The composition for extrusion contains a polymeric binder to provide a cohesive mass to bind the particles together during the extrusion process with the binder subsequently removed at lower temperatures during sintering. The composition for extrusion further includes a deflocculent, an organic plasticizer and a solvent which also are subsequently removed during sintering. Electrically conductive tubing with an inner diameter of 52 mil and an outer diameter of 87-355 mil has also been produced. Flat ribbons have been produced in the range of 10-125 mil thick by 100-500 mil wide.

5725218, Mar 10, 1998

Nov 15, 1996

8/749980

P. Subraya Maiya - Darien IL
John J. Picciolo - Lockport IL
James E. Emerson - Plainfield IL
Joseph T. Dusek - Lombard IL
Uthamalingam Balachandran - Hinsdale IL

The University of Chicago - Chicago IL

F16J 1514
C03C 824

277 1

For a combination of a membrane of SrFeCo. sub. 5 O. sub. x and an Inconel alloy, a high-temperature seal is formed between the membrane and the alloy. The seal is interposed between the alloy and the membrane, and is a fritted compound of Sr oxide and boric oxide and a fritted compound of Sr, Fe and Co oxides. The fritted compound of SrFeCo. sub. 50 O. sub. x is present in the range of from about 30 to 70 percent by weight of the total sealant material and the fritted compound of Sr oxide and boric oxide has a mole ratio of 2 moles of the Sr oxide for each mole of boric oxide. A method of sealing a ceramic to an Inconel metal alloy is also disclosed.

5573737, Nov 12, 1996

Sep 27, 1994

8/313622

Uthamalingam Balachandran - Hinsdale IL
Joseph T. Dusek - Lombard IL
Mark S. Kleefisch - Napersville IL
Thadeus P. Kobylinski - Lisle IL

The United States of America as represented by the United States
Department of Energy - Washington DC

B01J 802
B01J 1900
A47G 1922
B32B 900

422211

A functionally gradient material for a membrane reactor for converting methane gas into value-added-products includes an outer tube of perovskite, which contacts air; an inner tube which contacts methane gas, of zirconium oxide, and a bonding layer between the perovskite and zirconium oxide layers. The bonding layer has one or more layers of a mixture of perovskite and zirconium oxide, with the layers transitioning from an excess of perovskite to an excess of zirconium oxide. The transition layers match thermal expansion coefficients and other physical properties between the two different materials.