Dorothy M Lukco

7389675, Jun 24, 2008

May 12, 2006

11/434578

Gary W. Hunter - Oberlin OH, US
Jennifer C. Xu - Olmsted Township OH, US
Dorothy Lukco - Sagamore Hills OH, US

The United States of America as represented by the National Aeronautics and Space Administration - Washington DC

G01N 27/00

73 3106, 257253

A miniaturized Schottky diode hydrogen and hydrocarbon sensor and the method of making same is disclosed and claimed. The sensor comprises a catalytic metal layer, such as palladium, a silicon carbide substrate layer and a thin barrier layer in between the catalytic and substrate layers made of palladium oxide (PdO). This highly stable device provides sensitive gas detection at temperatures ranging from at least 450 to 600 C. The barrier layer prevents reactions between the catalytic metal layer and the substrate layer. Conventional semiconductor fabrication techniques are used to fabricate the small-sized sensors. The use of a thicker palladium oxide barrier layer for other semiconductor structures such as a capacitor and transistor structures is also disclosed.

8001828, Aug 23, 2011

Jun 20, 2008

12/143139

Gary W. Hunter - Oberlin OH, US
Jennifer C. Xu - Olmsted Township OH, US
Dorothy Lukco - Sagamore Hills OH, US

The United States of America as represented by the Administrator of National Aeronautics and Space Administration - Washington DC

G01N 27/00

73 3106, 257253

A miniaturized Schottky diode hydrogen and hydrocarbon sensor and the method of making same is disclosed and claimed. The sensor comprises a catalytic metal layer, such as palladium, a silicon carbide substrate layer and a thin barrier layer in between the catalytic and substrate layers made of palladium oxide (PdO). This highly stable device provides sensitive gas detection at temperatures ranging from at least 450 to 600 C. The barrier layer prevents reactions between the catalytic metal layer and the substrate layer. Conventional semiconductor fabrication techniques are used to fabricate the small-sized sensors. The use of a thicker palladium oxide barrier layer for other semiconductor structures such as a capacitor and transistor structures is also disclosed.

46004432, Jul 15, 1986

Oct 1, 1984

6/656308

Peter I. Basalyk - Parma OH
Dorothy Lukco - Macedonia OH
J. Robert Mooney - South Russell OH
Dexter C. Seifert - Lyndhurst OH

Kennecott Corporation - Cleveland OH

C23G 102
C23G 114

134 3

Surface oxides, such as copper, zinc and aluminum oxides, are effectively removed from copper-base alloys by a process comprising: (a) contacting the alloy surface with an aqueous solution containing potassium ions, e. g. a solution prepared by dissolving potassium hydroxide in water; and (b) subsequently contacting the alloy surface with an aqueous solution comprising an acid, a peroxide, and a metal oxide, e. g. a solution of sulfuric acid, hydrogen peroxide and molybdic acid, the solution having: (i) an acid equivalent of a sulfuric acid solution of about 4 to 30 percent by volume; (ii) a peroxide concentration of about 1 to 30 percent by volume; and (iii) a metal oxide concentration of about 0. 1 to 5 percent by volume.

53546156, Oct 11, 1994

Jun 27, 1990

7/545328

Michael A. Tenhover - Solon OH
Dorothy B. Lukco - Sagamore Hills OH

The Carborundum Company - Niagara Falls NY

B32B 900

428366

The subject invention relates to a coated reinforcement material comprising a SiC-based reinforcement having a rare earth boride coating preferably of the general formula: R. sub. x B. sub. 1-x wherein R is selected from the group consisting of Y, Sc, Gd, Tb, Dy, Ho, Er and combinations thereof; and x is from about 0. 05 to about 0. 66. The invention further relates to a high strength, high temperature performance composite comprising a SiC-based reinforcement material having a coating comprising a rare earth boride, said coated reinforcement material disposed in a metal matrix material.

51621592, Nov 10, 1992

Nov 14, 1991

7/791731

Michael A. Tenhover - Solon OH
Dorothy Lukco - Sagamore Hills OH

The Standard Oil Company - Cleveland OH

C22C 109

428614

Coated reinforcement material for metal matrix composites comprising a carbon or silicon-containing reinforcement having a coating of the general formula: A. sub. 100-x M. sub. x wherein A is at least one of Y, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; M is at least one of Mo, W or Re; and x is from about 10 to about 90.