Battelle Memorial Institute

Micell Technologies, Inc.

George S Deverman

John L Fulton

Dean W Matson

Clement R Yonker

James B McClain

C Douglas Taylor

Joseph M Crowley

Leonard S Fifield

Barbara J Tarasevich

Wendy J Shaw

Krys Wallace

Daniel J Gaspar

A system and method are disclosed for coating surfaces of expandable medical devices with composite coatings. Coatings are composed of various materials including, e.g., polymers and drugs. Transfer of the coatings within a patient or other host forms a drug-eluting coating that delivers time-released drugs over time for treatment of a medical condition.

System and process for formation of a time-released, drug-eluting transferable coating

This disclosure describes the application of a supplemental corona source to provide surface charge on submicrometer particles to enhance collection efficiency and micro-structural density during electrostatic collection.

System and method for enhanced electrostatic deposition and surface coatings

Methods are disclosed for depositing materials selectively and controllably from liquid, near-critical, and/or supercritical fluids to a substrate or surface controlling the location and/or thickness of material(s) deposited to the surface or substrate. In one exemplary process, metals are deposited selectively filling feature patterns (e.g., vias) of substrates. The process can be further used to control deposition of materials on sub-surfaces of composite or structured silicon wafers, e.g., for the deposition of barrier films on silicon wafer surfaces. Materials include, but are not limited to, overburden materials, metals, non-metals, layered materials, organics, polymers, and semiconductor materials. The instant invention finds application in such commercial processes as semiconductor chip manufacturing. In particular, selective deposition is envisioned to provide alternatives to, or decrease need for, such processes as Chemical Mechanical Planarization of silicon surfaces in semiconductor chip manufacturing due to selective filling and/or coating of pattern features with metals deposited from liquid, near-critical, or supercritical fluids.

Method and apparatus for selective deposition of materials to surfaces and substrates

A method for depositing a substance on a substrate that involves forming a supercritical fluid solution of at least one supercritical fluid solvent and at least one solute, discharging the supercritical fluid solution through an orifice under conditions sufficient to form solid particles of the solute that are substantially free of the supercritical fluid solvent, and electrostatically depositing the solid solute particles onto the substrate. The solid solute particles may be charged to a first electric potential and then deposited onto the substrate to form a film. The solute particles may have a mean particle size of less than 1 micron.

Electrostatic deposition of particles generated from rapid expansion of supercritical fluid solutions

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Richland, WA, United States of America

George S Deverman