ARVYDAS P PAULIKAS
Pilots at Rosehill Ln, Downers Grove, IL

5173476, Dec 22, 1992

Oct 3, 1988

7/252698

Boyd W. Veal - Downers Grove IL
John W. Downey - Joliet IL
Daniel J. Lam - Orland Park IL
Arvydas P. Paulikas - Downers Grove IL

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

C01B 1318, C01F 1104, C01G 302, C01G 2900

505 1

A superconductor consisting of a sufficiently pure phase of the oxides of Bi, Sr, Ca, and Cu to exhibit a resistive zero near 110K resulting from the process of forming a mixture of Bi. sub. 2 O. sub. 3, SrCO. sub. 3, CaCO. sub. 3 and CuO into aparticulate compact wherein the atom ratios are Bi. sub. 2, Sr. sub. 1. 2-2. 2, Ca. sub. 1. 8-2. 4, Cu. sub. 3. Thereafter, heating the particulate compact rapidly in the presence of oxygen to an elevated temperature near the melting point of the oxides to form a sintered compact, and then maintaining the sintered compact at the elevated temperature for a prolonged period of time. The sintered compact is cooled and reground. Thereafter, the reground particulate material is compacted and heated in the presence of oxygen to an elevated temperature near the melting point of the oxide and maintained at the elevated temperature for a time sufficient to provide a sufficiently pure phase to exhibit a resistive zero near 110K.

5869431, Feb 9, 1999

Apr 15, 1996

8/632549

Boyd W. Veal - Downers Grove IL
Arvydas Paulikas - Downers Grove IL
Uthamalingam Balachandran - Hinsdale IL
Wei Zhong - West Lafayette IN

The University of Chicago - Chicago IL

H01L 3900

505234

A method of fabricating bulk superconducting material such as RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. where R is La or Y comprising depositing a thin epitaxially oriented film of Nd or Sm (123) on an oxide substrate. The powder oxides of RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. or oxides and/or carbonates of R and Ba and Cu present in mole ratios to form RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. , where R is Y or La are heated, in physical contact with the thin film of Nd or Sm (123) on the oxide substrate to a temperature sufficient to form a liquid phase in the oxide or carbonate mixture while maintaining the thin film solid to grow a large single domain 123 superconducting material. Then the material is cooled. The thin film is between 200. ANG.

5611854, Mar 18, 1997

Sep 21, 1995

8/531399

Boyd W. Veal - Downers Grove IL
Arvydas Paulikas - Downers Grove IL
Uthamalingam Balachandran - Hinsdale IL
Wei Zhong - Chicago IL

The University of Chicago - Chicago IL

C30B 1104

117 1

A method of fabricating bulk superconducting material including RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. comprising heating compressed powder oxides and/or carbonates of R and Ba and Cu present in mole ratios to form RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. in physical contact with an oxide single crystal seed to a temperature sufficient to form a liquid phase in the RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. while maintaining the single crystal seed solid to grow the superconducting material and thereafter cooling to provide a material including RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. R is a rare earth or Y or La and the single crystal seed has a lattice mismatch with RBa. sub. 2 Cu. sub. 3 O. sub. 7-. delta. of less than about 2% at the growth temperature. The starting material may be such that the final product contains a minor amount of R. sub. 2 BaCuO. sub. 5.

4799249, Jan 17, 1989

Jun 2, 1987

7/056825

Arvydas P. Paulikas - Downers Grove IL

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

H01J 3510

378125

A self-cleaning rotating anode x-ray source comprising an evacuable housing, a rotatable cylindrical anode within the housing, a source of electrons within the housing which electrons are caused to impinge upon the anode to produce x-rays, and means for ionizing residual particles within the housing and accelerating such ions so as to impinge upon the anode to sputter impurities from the surface thereof.