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1. WO1997038480 - ELECTROSTATIC CHUCKS

Publication Number WO/1997/038480
Publication Date 16.10.1997
International Application No. PCT/US1997/005352
International Filing Date 09.04.1997
Chapter 2 Demand Filed 07.11.1997
IPC
A61K 9/20 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
20Pills, lozenges or tablets
A61K 9/28 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
20Pills, lozenges or tablets
28Dragees; Coated pills or tablets
B05B 5/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
08Plant for applying liquids or other fluent materials to objects
H02N 13/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
13Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
CPC
A61K 9/2086
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
20Pills, tablets, ; discs, rods
2072characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
2086Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat
A61K 9/2893
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
20Pills, tablets, ; discs, rods
28Dragees; Coated pills or tablets ; , e.g. with film or compression coating
2893Tablet coating processes
B01J 2219/00468
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2219Chemical, physical or physico-chemical processes in general; Their relevant apparatus
00274Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
00277Apparatus
00457Dispensing or evacuation of the solid phase support
00459Beads
00468by manipulation of individual beads
B05B 5/08
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
08Plant for applying liquids or other fluent materials to objects
B05B 5/082
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
08Plant for applying liquids or other fluent materials to objects
082characterised by means for supporting, holding or conveying the objects
B05B 5/087
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
08Plant for applying liquids or other fluent materials to objects
087Arrangements of electrodes, e.g. of charging, shielding, collecting electrodes
Applicants
  • SARNOFF CORPORATION [US]/[US]
Inventors
  • SUN, Hoi, Cheong, Steve
  • PLETCHER, Timothy, Allen
Agents
  • SILVERIO, John, V.
Priority Data
08/630,05009.04.1996US
08/661,21010.06.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTROSTATIC CHUCKS
(FR) DISPOSITIFS DE FIXATION ELECTROSTATIQUES
Abstract
(EN)
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 (620) for electrostatically attracting an object (680) or objects wherein the object is used in chemical or pharmaceutical assaying or manufacturing. The object 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 pharmaceutical active ingredient, to a substrate, such as a tablet. In one aspect, the electrostatic chuck (1110) includes a floating electrode (1170), thereby providing for charge imaging for the deposition particles in a selected image. Additionally, the invention provides a sensing electrode (1310), 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.
(FR)
Cette invention porte sur des dispositifs de fixation électrostatiques, sur leurs modes d'emploi, sur le dépôt d'objets par électricité statique, des particules dans une poudre sèche par exemple, sur des substrats receveurs ainsi que sur ces substrats eux-mêmes ayant fait l'objet d'un dépôt par électricité statique. L'un des aspects de l'invention porte sur un dispositif de fixation électrostatique (620) destiné à attirer par électricité statique un objet (680) ou des objets, cet objet étant utilisé dans le cadre d'une épreuve chimique ou pharmaceutique ou d'une fabrication. L'objet peut être un substrat pharmaceutique, un comprimé pharmaceutique notamment. D'autres réalisations de l'invention portent sur des dispositifs de fixation ainsi que sur l'utilisation qui en est faite pour attirer par électricité statique des particules, des ingrédients pharmaceutiques actifs notamment, sur un substrat, un comprimé par exemple. Ce dispositif de fixation électrostatique (1110), selon un aspect de l'invention, comporte une électrode flottante (1170) assurant une imagerie à effet de charge pour le dépôt de particules sur une image sélectionnée. Cette invention a, de surcroît, trait à une électrode de détection (1310), éventuellement utilisable avec un dispositif de fixation électrostatique, destinée à détecter le nombre de particules attirées vers des objets sur le dispositif de fixation ou sur un autre substrat, assurant, de ce fait, le dépôt d'un quantité exacte de particules. Elle concerne encore des objets pourvus de zones sélectionnées dans lesquelles des particules viennent s'appliquer sur l'objet par effet électrostatique.
Also published as
AT19979119
DE19782130
FI991162
IL152245
NZ332222
SE03024783
SE99018822
Latest bibliographic data on file with the International Bureau