06670038 is referenced by 113 patents and cites 3 patents.

The present invention is directed to electrostatic chucks, methods for their use, the electrostatic deposition of objects, such as particles in a dry powder, onto recipient substrates, and the recipient substrates themselves that have been subjected to electrostatic deposition. In one aspect, the present invention provides an electrostatic chuck for electrostatically attracting an object or objects wherein the object is used in chemical or pharmaceutical assaying or manufacturing. The objects can be pharmaceutical substrates, for example, such as a pharmaceutical tablet. Additional embodiments of the invention provide chucks and their use to electrostatically attract particles, such as a pharmaceutically active ingredient, to a substrate, such as a tablet. In one aspect, the electrostatic chuck comprises a floating electrode, and is used to selectively attract particles to a substrate above the floating electrode, thereby providing for charge imaging for the deposition of particles in a selected image. Additionally, the invention provides comprising a sensing electrode, optionally for use with an electrostatic chuck, for sensing the number of particles attracted to the objects on the chuck or other substrate, thereby providing for deposition of an accurate amount of particles. Furthermore, the present invention provides objects having selected areas in which particles are applied to the object via electrostatic means.

Title
Method of depositing particles with an electrostatic chuck
Application Number
10/174301
Publication Number
6670038 (B2)
Application Date
June 17, 2002
Publication Date
December 30, 2003
Inventor
Timothy Allen Pletcher
Eastampton
NJ, US
Hoi Cheong Steve Sun
Dayton
NJ, US
Agent
Dechert
US
Assignee
Delsys Pharmaceutical
NJ, US
IPC
B32B 5/16
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