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Dr. Lackey has eighteen (18) patents, including two (not listed below) currently under review. The patents are in
chronological order, from most recent, each with a link to the actual patent documents.
- "Laminated Matrix Composites and Method for Making the Same," Walter J. Lackey and Stuart R. Stock, U.S. Patent No.6,284,357 (September 4, 2001). A laminated matrix composite made of a reinforcement phase and coated with several
layers of a metallic, ceramic, or polymeric matrix material, the average thickness of the
layers of matrix material being between 0.005 and 5 µm thick.
- "Fabrication of Carbon/Carbon Composites By Forced Flow-Thermal Gradient Chemical Vapor Infiltration," Walter J. Lackey and Sundar
Vaidyaraman, U.S. Patent No.5,916,633 (June 29, 1999). This patent is based on the use of the forced flow-thermal gradient chemical vapor infiltration process for the rapid fabrication of carbon
fiber reinforced carbon matrix composites.
- "Ceramic Fabric Forming Method," Walter J. Lackey and John A. Hanigofsky, U.S. Patent No. 5,609,912 (March 11, 1997). This patent
discusses a method of forming a ceramic fabric easily and economically by oxidizing a carbon core.
- "Method for the Chemical Vapor Deposition of Group IB and Group VIII B Metal Barrier Layers," Walter J. Lackey, John A. Hanigofsky, David N.
Hill, Michael J. Shapiro, E. Kent Barefield, and William B. Carter, U.S. Patent No. 5,352,656 (4 October, 1994). In this patent, a method for applying a metal film barrier layer between a substrate and
a superconductor coating, or over a superconductivity coating using chemical vapor deposition is described.
- "Rapid Process for the Preparation of Diamond Articles," Walter J. Lackey and John A. Hanigofsky, U.S. patent No. 5,527,747 (18 June, 1996).
This is the patent for the process of preparing thick diamond articles through forced flow chemical vapor infiltration.
- "Method and Apparatus for the Rapid Deposition with Low Vapor Pressure Reactants by Chemical Vapor Deposition," Walter J. Lackey, Kent
Barefield, William B. Carter, John A. Hanigofsky, and David N. Hill, U.S. Patent No. 5,108,983 (28 April 1992) and foreign patents pending. This is the method for applying coatings to substrates using chemical vapor deposition with reagents that have low vapor pressure. It details the steps to form the oxide superconductor coating.
- "Dispersion Toughened Ceramic Composites and Method For Making Same," David P. Stinton and Walter J. Lackey, U.S. Patent No. 4,598,024 (1
July 1986). This patent describes a method to increase fracture toughness in ceramic composites by the simultaneous deposition of silicon carbide and titanium disilicide by chemical vapor deposition.
- "Process for the Preparation of Fiber Reinforced Composites by Chemical Vapor Deposition," Walter J. Lackey and Anthony J. Caputo, U.S.
Patent No. 4,580,524 (8 April 1986). In this forced flow-thermal gradient CVI process, a specially designed apparatus provides a steep thermal gradient across the thickness of a fibrous preform.
The process allows for a significant process time reduction over previous chemical vapor infiltration processes.
- "Method for Forming Microspheres for Encapsulation of Nuclear Waste," Peter Angelini, Anthony J. Caputo, Richard E. Hutchens, Walter J.
Lackey, and David P. Stinton, U.S. Patent No. 4,481,134 (6 November 1984). This patent discusses a method for immobilization of nuclear waste by coating of microspheres.
- "Method of Deposition of Silicon Carbide Layers on Substrates and Product," Peter Angelini, Charles E. DeVore, Walter J. Lackey, Raymond E.
Blanco, David P. Stinton, U.S. Patent No. 4,459,338 (10 July 1984). This is a method for coating a nuclear waste particle with crystalline silicon carbide.
- "Method for Primary Containment of Cesium Wastes," Peter Angelini, Walter J. Lackey, David P. Stinton, Raymond E. Blanco, Walter D. Bond,
Wesley D. Arnold, U.S. Patent No. 4,376,792 (15 March 1983). The purpose of this patent is to produce a cesium-retentive waste form with a high degree of compositional stability and mechanical
integrity by subjecting a cesium-loaded zeolite to heat under conditions suitable to stabilize the zeolite and immobilize the cesium.
- "Mixed Uranium Dicarbide and Uranium Dioxide Microspheres and Process of Making Same," D. P. Stinton, W. J. Lackey, and R. D. Spence, U.S.
Patent No. 4,367,184 (4 January 1983). This patent relates in general to nuclear reactor fuel and a method for manufacturing it as well. It provides a method for making nuclear fuel microspheres
with densities and compositions never attainable before.
- "Gas Scrubbing Liquids," Walter J. Lackey, Robert S. Lowrie, and John D. Sease, U.S. Patent No. 4,276,063 (30 June 1981). This
patent relates to the liquids that are used in gas scrubbers for preventing toxic gas emissions to the atmosphere during coating of nuclear fuel.
- "Method of Evaluating the Integrity of the Outer Carbon Layer of TrisoCoated Reactor Fuel Particles," Anthony J. Caputo, Dante A. Costanzo,
Walter J. Lackey, Frank L. Layton, and David P. Stinton, U.S. Patent No. 4,227,081 (7 October 1980). This is a method to determine the existence of defective outer layers on coated fuel particles by
subjecting the particles to high-temperature treatments with gaseous chlorine. The chlorine reacts with underlying silicon carbide leaving carbon as a porous layer which can be easily detected by
radiography.
- "Process to Minimize Cracking of Pyrolytic Carbon Coatings," Walter J. Lackey and John D. Sease, U.S. Patent No. 4,068,015 (10 January 1978).
This is a method for producing carbon-coated microspheres that have a low percentage of cracked coatings and, at the same time, added strength and mechanical stability by annealing immediately after the carbon
coating process.
- "Means for Effecting Fluidization in Pyrolytic Carbon Coating Processes," Walter J. Lackey and John D. Sease, U.S. Patent No. 3,889,631 (17
June 1975). An improved gas distributor is described which has use in fluidized bed coaters for deposition of pyrolitic carbon.
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