Fluidized Bed Utilized Patents (Class 427/213)
  • Publication number: 20040166248
    Abstract: Activated carbon particles or fabrics are coated with a deformable or water-insoluble coating material comprising a binding agent and a masking agent that can be colored. The coating material can provide sufficient diffusivity to permit excellent efficiency in adsorption of materials in spite of the presence of a coating layer on the activated carbon. The use of a deformable binding agent yields coated particles that make relatively noise when the particles flow or are moved in use, and that have improved tactile properties in use. High performance colored activated carbon materials can be produced and placed in absorbent articles, overcoming common objections about the black color of activated carbon.
    Type: Application
    Filed: February 25, 2004
    Publication date: August 26, 2004
    Inventors: Sheng-Hsin Hu, Ronald Lee Edens, Jeffrey Dean Lindsay, Thomas Gerard Shannon
  • Patent number: 6777029
    Abstract: The present invention is generally directed to a method of controlling a pyrolytic carbon deposition coating process performed in a fluidized bed. In one illustrative embodiment, the method comprises positioning a product to be coated in the fluidized bed, determining a coating rate of carbon material formed on the product in the fluidized bed, and determining a desired duration of the coating process by dividing a desired coating thickness for the product by the determined coating rate.
    Type: Grant
    Filed: April 27, 2002
    Date of Patent: August 17, 2004
    Assignee: Carbomedics Inc.
    Inventors: Walter John Carnagey, Sr., Bradley George Borgard, Kenneth Wayne Cox
  • Patent number: 6773521
    Abstract: Apparatus (1) and process for treating particulate material or powder (33) of a size capable of being fluidized in a retort (31) mounted for rotation on a pair of end axles (18, 41). Retort (31) is mounted on a tilt frame (5) for tilting movement in a vertical plane. Gas conduits (18A, 18B) are mounted within an axle (18) for the supply and exhaust of gas for retort (31). A conduit (55) mounted within the other axle (41) permits particulate material to be passed into or out of the retort (31) as shown in FIG. 1B. A removable injection assembly (90, FIG. 10) is utilized for the injection of additional particulate material. A removable sampling assembly (95, FIG. 11) is utilized for removing a sample of the particulate material from the retort (31). As the retort (31) is rotated, particles of the particulate material are constantly intermingled with each other and the walls of the retort (31). Microwave energy as shown in FIGS. 13-14 may be utilized to heat or dry materials within the retort (31).
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: August 10, 2004
    Assignee: Kemp Development Corporation
    Inventor: Willard E. Kemp
  • Patent number: 6773813
    Abstract: A new fluidized bed particle coating method is disclosed by the use of which coatings can be uniformly and conveniently deposited on the surfaces of fluidized particulate materials by vapor deposition processes at temperatures lower than those of the heated coating precursor transport lines. By this method, particle materials with relatively low surface temperatures may be brought into close proximity with a coating precursor containing gas stream characterized by a substantially higher gas volume temperature in such a way that the vaporized precursor molecules are caused to adsorb or condense on the relatively cold particle surfaces without also condensing on any other surface. Further, if the adsorbed precursor molecules are capable of reacting or polymerizing on the relatively cold particle surfaces, thus forming substantially continuous coatings on those surfaces, they may do so without also depositing such coatings on any other surfaces.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: August 10, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Keith A. Klinedinst, Christoforos Kazazis, Daniel Carril
  • Patent number: 6770141
    Abstract: Methods and systems for controlling evaporative drying processes using environmental equivalency control process parameters to provide a specified product quality. In an environmental equivalency-based control system, measured values are received by environmental equivalency calculation hardware or software. An environmental equivalency value is calculated based on the measured parameters. One or more of the process parameters may then be varied to maintain the environmental equivalency value for the process within a predetermined range of environmental equivalency values.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: August 3, 2004
    Assignee: SmithKline Beecham Corporation
    Inventors: Dwayne A Campbell, Joseph T. Marranca, Raymond E. Pope, Robert Allen Stagner
  • Patent number: 6745960
    Abstract: A centrifugal tumbling granulating apparatus 1 comprises a fixed wall 7 having a grain contact portion 7a which is in contact with powder grains 2 and of which a horizontal section is formed in a circular shape, and a rotating disk 5 provided a clearance 12 away from an inner side of the fixed wall 7 and rotating in a horizontal direction by a motor 13, wherein an air supply device 21 for supplying drying air 22 to an upper surface side of the rotating disk 5 is provided above the rotating disk 5. The air supply device 21 has a cylindrical straight tube portion 25, and an air supply port 23 formed in a cone shape, and is disposed in a centrifugal tumbling chamber 6 to be movable in an up-and-down direction. During a granulating step, the air supply device 21 stops to supply the dry air 22 and waits at an upper position H. After the granulation processing, the air supply device is lowered at a lower position L and supplies the dry air 22 onto the rotating disk 5 to dry granulated substances.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: June 8, 2004
    Assignee: Freund Industrial Co., Ltd.
    Inventors: Nagayoshi Myo, Akira Iwasaki, Hiroshi Okada, Kuniaki Yamanaka, Koji Nagaoka, Mamoru Shiratori
  • Patent number: 6733826
    Abstract: A process for preparing particles of zinc sulfide-based electroluminescent phosphor having a moisture resistant coating thereon which comprises the steps of selecting a reaction vessel having a given height and a porous disc at the bottom thereof; charging the reaction vessel with phosphor particles and fluidizing the particles by introducing an inert gas into the vessel through the porous disc; heating the reaction vessel to a reaction temperature; introducing a coating precursor into the reaction vessel at a position adjacent the bottom of the vessel but above the disc; introducing a co-reactant into the reaction vessel at a position substantially mid-way of the given height; and maintaining the inert gas flow, the precursor flow and the co-reactant flow for a time sufficient for a reaction to occur and coat the phosphor with the moisture resistant coating. Apparatus for carrying out the process is also disclosed.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: May 11, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Chen-Wen Fan, Dale E. Benjamin
  • Patent number: 6723346
    Abstract: The invention is concerned with a novel process for the manufacture of flowable, non-dusty, binder-free riboflavin granulates by subjecting an aqueous suspension of riboflavin crystals of crystal modification B/C to a fluidized bed spray drying process, a single fluid nozzle spray drying process or a disk-type spray drying process.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: April 20, 2004
    Assignee: Roche Vitamins Inc.
    Inventors: Markus Nowotny, Jean-Claude Tritsch
  • Patent number: 6723372
    Abstract: A process for the production of encased, spherical granular grains comprising spraying grains which consist of a prostane derivative and a cyclodextrin vehicle, forming together a prostane-cyclodextrine-clathrate, with an aqueous polymer dispersion of ethyl cellulose and/or poly(methyl)acrylic acid ester in a fluidized or boiling bed is disclosed. The polymer dispersion is applied in a thickness equivalent to 1-5% (w/w) of the total mass of the encased grains. The coated grains are cured for at least 24 hours. Grains produced according to this method have a pharmaceutical active ingredient release profile which remains unchanged over the storage time.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: April 20, 2004
    Assignee: Schering Aktiengesellschaft
    Inventor: Torsten Wagner
  • Patent number: 6709745
    Abstract: A method for effectively decreasing electromagnetic radiation by means of active absorbing material in a broad frequency band, preferably from 100 MHz-10 GHz, is provided wherein the material combines the desired shielding properties with the heat insulating properties of a porous material in addition to providing a favourable ratio between density and resistance. The method includes use of an absorber granulate which consists of a highly porous glass and/or ceramic granulate which is coated or filled with ferrite and/or an electrically conductive material.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: March 23, 2004
    Assignees: Hermsdorfer Institut Fuer Technische Karamik E.V., Colfirmit Rajasil GmbH & Co. KG
    Inventors: Josef Kuchler, Jan-Thomas Kuehnert, Klaus Kupfer, Stefan Rossmayer, Wolfgang Schoeps, Hans-Werner Zier
  • Patent number: 6686043
    Abstract: A method of coating phosphor particles comprises introducing an inert gas into a reaction vessel and charging phosphor particles into the reaction vessel. The reaction vessel is then heated to a reaction temperature and a coating precursor is introduced while the temperature is maintained for a time sufficient to saturate the phosphor particles with the precursor. Thereafter, continuous precursor is introduced into the reaction vessel, along with an oxygen/ozone mixture. The inert gas flow, oxygen/ozone mixture flow and further precursor are supplied for a time sufficient to coat the phosphor particles.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: February 3, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Chen-Wen Fan, Richard G. W. Gingerich, Dale E. Benjamin
  • Patent number: 6680032
    Abstract: A new process for continuously preparing granules having narrow grain size distribution, comprising a) spraying the product to be granulated in liquid form into a fluidized bed, b) separating the proportions of fine material escaping from the fluidized bed from the off-gas and returning said fine material to the fluidized bed as nuclei for granule formation, c) setting the fluidizing gas flow such that granules are formed which are of a predetermined size, and d) removing the completed granules solely by way of at least one countercurrent gravity classifier inserted into the outflow bottom of the fluidized-bed vessel. A new apparatus for carrying out the process according to the invention and new granules.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: January 20, 2004
    Assignee: Bayer AG
    Inventors: Hans Uhlemann, Burkhard Braun, Heinz Hausmann, Gerhard Stopp, Horts Karkossa
  • Patent number: 6663901
    Abstract: The present invention is concerned with pellets comprising a 710-1180 &mgr;m (16-25 mesh) sugar core, a coating film of a water-soluble polymer and an antifungal agent, and a seal coating layer wherein the residual concentration of dichloromethane is below 600 ppm; pharmaceutical dosage forms comprising said pellets and a method of preparing said pellets.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: December 16, 2003
    Assignee: Janssen Pharmaceutical N.V.
    Inventors: Paul Marie Victor Gilis, Valentin Florent Victor De Conde, Roger Petrus Gerebern Vandecruys
  • Patent number: 6656898
    Abstract: A detersive enzyme composite particle suitable for incorporation in a liquid detergent composition is disclosed. The enzyme composite particle includes an enzyme containing core material, an acidic barrier layer coated on the enzyme containing core material, and a physical barrier layer coated on the acidic barrier layer.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: December 2, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Peter Robert Foley, Jeffrey Donald Painter, Mary Ruth Leyendecker, Eugene Steven Sadlowski, Brian Xiaoqing Song, Joseph Herbert Thien
  • Patent number: 6656871
    Abstract: During the deposition of a catalytic component on a carrier, the position of the liquid level of a slurry containing the catalytic component is controlled with high accuracy and the adhesion of the slurry to the lateral face of the carrier is prevented. In the deposition of the liquid substance on the carrier by the introduction of the liquid substance into the carrier from the bottom face thereof, the liquid level near the top face of the carrier is detected by an image-processing sensor.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: December 2, 2003
    Assignees: ICT Co., Ltd., International Catalyst Technology, Inc., Nippon Shokubai Co., Ltd.
    Inventors: Shigeyoshi Taniguchi, Katsuji Tanihira, Makoto Horiuchi, Ryugo Kakimi
  • Patent number: 6652881
    Abstract: The invention provides compositions comprising micronized fenofibrate, where the compositions have a dissolution of at least 10% in 5 minutes, 20% in 10 minutes, 50% in 20 minutes and 75% in 30 minutes, as measured using the rotating blade method at 75 rpm according to the European Pharmacopoeia, in a dissolution medium constituted by water with 2% by weight polysorbate 80 or 0.025 M sodium lauryl sulfate.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: November 25, 2003
    Assignee: Laboratories Fournier, S.A.
    Inventors: André Stamm, Pawan Seth
  • Patent number: 6648969
    Abstract: An upper processing section 10 is provided by evenly spacing out functional stations 13 having respective functions of steps constituting a fluidized bed granulation coating process, on circumferential points. An intermediate storing section 20 is provided under the upper processing section 10 by evenly spacing out powder grain storing vessels 22 corresponding to the plurality of functional stations 13, on circumferential points. A lower gas supply section 30 is provided under the intermediate storing section 20 by evenly spacing out gas supply stations 31 corresponding to the plurality of powder grain storing vessels 22. The powder grain storing vessels 22 storing powder grains sequentially proceed to the respective functional stations 13 to execute respective processes to the powder grains, and thereby granulation coating of the powder grains is performed in a batch type and a continuous type.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: November 18, 2003
    Assignee: Freund Industrial Co., Ltd.
    Inventors: Nobuyuki Hirono, Narimichi Takei, Kazuomi Unosawa
  • Patent number: 6641866
    Abstract: The present invention relates to a manufacturing process of a coated granular sodium percarbonate, wherein the surface of said sodium percarbonate establishes a multiple coating layer by being internally coated with a specific composition containing alkali metal silicate while externally coated with a specific composition containing alkali metal sulfate on upper part of said internally coated layer thus providing said sodium percarbonate an excellent dissolving rate in water as well as a good storage stability, preventing it from caking during delivery or storage, and being ultimately utilized as an effective detergent bleach containing zeolite as its detergent builder.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: November 4, 2003
    Assignee: Oriental Chemical Industries Co., Ltd.
    Inventors: Sang Hwa Lee, Yong Il Kim, Sun Ki Shur, Jong Pill Lee
  • Patent number: 6641918
    Abstract: Geldhart class C tungsten carbide particles are provided with a discontinuous coating of grain growth inhibitor. Further, the fine tungsten carbide coatings are preferably provided with a continuous coating of another discreet phase material, such as, for example, a continuous coating of cobalt. Compacts produced using such materials are particularly useful as WC—Co hardmetals wherein the compacts are extremely fine grained.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: November 4, 2003
    Assignee: Powdermet, Inc.
    Inventors: Andrew J. Sherman, Animesh Bose
  • Publication number: 20030203106
    Abstract: The present invention is generally directed to a method of controlling a pyrolytic carbon deposition coating process performed in a fluidized bed. In one illustrative embodiment, the method comprises positioning a product to be coated in the fluidized bed, determining a coating rate of carbon material formed on the product in the fluidized bed, and determining a desired duration of the coating process by dividing a desired coating thickness for the product by the determined coating rate.
    Type: Application
    Filed: April 27, 2002
    Publication date: October 30, 2003
    Inventors: Walter John Carnagey, Bradley George Borgard, Kenneth Wayne Cox
  • Publication number: 20030190417
    Abstract: Under the granulating section 10a for performing fluidized-bed granulation coating of powder grains, a drying section 20a for drying powder grains granulated is provided. A drying section 30a for drying the powder grains that are not sufficiently dried is provided under the drying section 20a. A product discharging section 40a for discharging a dried product is provided under the drying section 30a. A fluidized-bed forming-gas is supplied downward to upward, and granulation and dryness are continuously performed by the fluidized-bed forming-gas, and the powder grains moved from the granulating section to the drying section located immediately thereunder are pneumatic classified.
    Type: Application
    Filed: October 31, 2002
    Publication date: October 9, 2003
    Inventors: Narimichi Takei, Takehiko Itou, Takashi Watanabe, Kazuomi Unosawa, Hiroyuku Ooishi
  • Publication number: 20030180455
    Abstract: The invention provides a coating method for forming a uniform coating layer on the entirety of powder by using simple means. The method has the steps of supplying the powder into a container; rotating a stirring blade so that a rotation speed of an end portion thereof is about 1.5 m/sec or more while blowing a fluidizing gas into the powder at a velocity of about 3.0 m/sec or more from a position above the powder for stirring and fluidizing, the stirring blade being disposed at a bottom portion of the container; spraying a coating fluid onto the powder from a position thereabove; and drying the coating fluid to form a coating layer.
    Type: Application
    Filed: March 18, 2003
    Publication date: September 25, 2003
    Applicant: KAWASAKI STEEL CORPORATION
    Inventors: Toshio Maetani, Naomichi Nakamura, Masaki Ueta, Shingo Saito
  • Patent number: 6616968
    Abstract: To provide superior anti-agglomeration, or tackiness-reducing, properties, one aspect of the invention is directed to coated polymeric particles, with each of the coated particles comprised of a polymeric substrate particle and a block-reducing coating on the surface of the substrate particle. The coating includes polymeric coating particles which advantageously may be in the form of a micro-fine powder. Also disclosed herein is a process for applying the polymeric coating particles onto the polymeric substrate particles, as well as equipment which is especially useful in producing the coated polymeric particles.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: September 9, 2003
    Assignee: Equistar Chemicals, LP
    Inventors: David O. Bostrom, William K. Shumake, Paul H. Jackson
  • Patent number: 6617026
    Abstract: The present invention relates to a particle comprising an active dispersed in a visco-elastic liquid matrix having a &eegr;′ and a &eegr;″ between 103 to 1014 Pa measured in a cone-and-plate rheometer at 25° C. and a sinusoidal frequencies &ohgr; of 1 Hz.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 9, 2003
    Assignee: Novozymes A/S
    Inventor: Poul Bach
  • Patent number: 6613383
    Abstract: Particles have an ultrathin, conformal coating are made using atomic layer deposition methods. The base particles include ceramic and metallic materials. The coatings can also be ceramic or metal materials that can be deposited in a binary reaction sequence. The coated particles are useful as fillers for electronic packaging applications, for making ceramic or cermet parts, as supported catalysts, as well as other applications.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: September 2, 2003
    Assignee: Regents of the University of Colorado
    Inventors: Steven M. George, John D. Ferguson, Alan W. Weimer
  • Patent number: 6602547
    Abstract: A new fluidized bed particle coating method is disclosed by the use of which coatings can be uniformly and conveniently deposited on the surfaces of fluidized particulate materials by vapor deposition processes at temperatures lower than those of the heated coating precursor transport lines. By this method, particle materials with relatively low surface temperatures may be brought into close proximity with a coating precursor containing gas stream characterized by a substantially higher gas volume temperature in such a way that the vaporized precursor molecules are caused to adsorb or condense on the relatively cold particle surfaces without also condensing on any other surface. Further, if the adsorbed precursor molecules are capable of reacting or polymerizing on the relatively cold particle surfaces, thus forming substantially continuous coatings on those surfaces, they may do so without also depositing such coatings on any other surfaces.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: August 5, 2003
    Assignee: Osram Sylvania Inc.
    Inventors: Keith A. Klinedinst, Christoforos Kazazis, Daniel Carril
  • Patent number: 6586046
    Abstract: Apparatus and method for producing metallic flake having an environmental coating for use in oxidative and corrosive atmospheres. Fluidized bed techniques are utilized to perform a controlled oxidation of metallic particles that include aluminum. The fluidized techniques permit the formation of a thin, outer shell of alumina over the outer surface of the flake. Because the oxidation is controlled so that the selective oxidation produces a thin outer shell, the particle has good reflectance and the metallic core of the particle is unaffected by the oxidizing treatment. Although the techniques of the present invention are effective for producing a reflective surface on aluminum-containing iron alloys while the core particles can be either magnetically soft or hard, the techniques can be used to produce a reflective surface that is corrosion and oxidation resistant on any aluminum containing alloy. Apparatus that facilitates the controlled oxidation is also set forth.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: July 1, 2003
    Assignee: General Electric Company
    Inventors: John F. Ackerman, Andrew J. Skoog, Matthew B. Buczek, Jane A. Murphy
  • Publication number: 20030091737
    Abstract: A process for the production or coating of granules in a fluidized bed, which includes heating a fluidized-bed gas to produce the fluidized bed, and applying a liquid medium containing a granule-forming or coating-forming compound, or at least one reaction component therefore, by spraying particles located in the fluidized bed and at a same time vaporizing an organic solvent contained in the liquid medium, said particles having a smaller mean diameter than that of particles to be produced. The process also includes partial condensation of an organic solvent from at least a portion of a fluidized-bed waste gas leaving the fluidized bed, and re-heating the fluidized bed-gas leaving the condensation device and reintroducing the re-heated gas into the fluidized bed.
    Type: Application
    Filed: October 15, 2002
    Publication date: May 15, 2003
    Applicant: DEGUSSA AG
    Inventors: Hans Christian Alt, Andreas Harthun, Joachim Luethi, Andreas Goelz, Stefan Schulze, Martin Wille
  • Patent number: 6562257
    Abstract: The present invention relates to a pourable or blowable loose-fill insulation, and in particular to a loose-fill insulation comprising glass fibers which are compressed and packaged in relatively small containers for easier installation by consumers. Agents capable of chemically interacting with the glass fibers are used in order to increase recoverability of the compressed glass fibers when they are removed from their packaging.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: May 13, 2003
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Liang Chen, William E. Downey
  • Publication number: 20030064222
    Abstract: Disclosed is a process for manufacturing a fiber having at least a surface comprised mainly of a thermoplastic resin and carrying solid particles affixed to the surface, comprising the steps of:
    Type: Application
    Filed: September 5, 2002
    Publication date: April 3, 2003
    Applicant: JAPAN VILENE COMPANY, LTD.
    Inventors: Tatsuo Nakamura, Susumu Hasegawa, Koichi Kato
  • Publication number: 20030031786
    Abstract: A process to coat granular through powdered material for particular bulk products that is cost-effective for bulk products and in which the coated product is produced continuously and in a quality and throughput that meets requirements for bulk products is provided. This is attained by the coating material being applied to the granular through powdered material particles in the form of a coating matrix that does not completely envelope the material particles with coating material, with the matrix then being dried and solidified by the process air, the coating material is applied continuously to the bed of material in a continuously operated fluidized bed in at least two different zones. The coating material is applied to the material particles located in the fluidized bed in the form of solutions, suspensions or melts with a solids fraction of 0.5 to 100%, preferably 2 to 20%.
    Type: Application
    Filed: June 26, 2002
    Publication date: February 13, 2003
    Applicant: Glatt Ingenieurtechnik GmbH
    Inventors: Karlheinz Rumpler, Michael Jacob, Mike Waskow
  • Patent number: 6509058
    Abstract: A phosphor particle has thereon a moisture resistant treatment of a metallic nitride. By moisture resistant is meant a condition allowing the phosphor particle to function in a humid atmosphere for a significantly longer period of time than an untreated particle. The method of making such phosphors comprises the steps of introducing an inert gas into a reaction vessel; charging phosphor particles into the reaction vessel; heating the reaction vessel to a reaction temperature; introducing a nitride coating precursor into the reaction vessel; introducing a co-reactant into the reaction vessel; and maintaining the inert gas flow, co-reactant flow and precursor supply for a time sufficient to moisture-proof the phosphor particles. The nitride treated phosphor particles produced by this method, which can include the deposition of a nitride coating on the particles, have excellent efficacy ratings and strong luminance values in lamps after 100 hours use in high humidity (i.e., >95%).
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: January 21, 2003
    Assignee: Osram Sylvania Inc.
    Inventors: Keith A. Klinedinst, Robert F. Clark
  • Patent number: 6472030
    Abstract: A method of forming an oriented film. A target is provided and material from the target is ablated onto a substrate to form a film. The film is heated in a synthesis gel of the target material to orient the film.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: October 29, 2002
    Assignee: Board of Regents, The University of Texas System
    Inventors: Kenneth J. Balkus, Jr., Mary E. Kinsel, Lisa L. Washmon
  • Patent number: 6461672
    Abstract: A fluidized bed coating apparatus is provided and includes a fluid inlet adapted to be connected to a source of fluidizing fluid. The fluid inlet has an entrance opening having a first diameter and an exit opening downstream of the entrance opening. The exit opening has a second diameter that is larger than the first diameter. The inlet also includes an expanding inlet section, between the entrance opening and the exit opening, that has an average diameter that increases in a direction from said entrance opening to said exit opening. A fluid distribution plate is provided adjacent the exit opening and includes a plurality of through-passages to allow the even and distributed passage of a fluidizing fluid therethrough. A chamber having a chamber inlet and a chamber outlet is provided and the fluid distribution plate is positioned between the exit opening and the chamber inlet.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: October 8, 2002
    Assignee: Genencor International, Inc.
    Inventors: Antti Kosola, Ryszard Braun, Nathaniel T. Becker, Robert L. Christensen, Jr., Ville Kyläkoski, Alfred L. Gaertner
  • Patent number: 6456002
    Abstract: A phosphor particle has thereon a moisture resistant treatment of a metallic nitride. By moisture resistant is meant a condition allowing the phosphor particle to function in a humid atmosphere for a significantly longer period of time than an untreated particle. The method of making such phosphors comprises the steps of introducing an inert gas into a reaction vessel; charging phosphor particles into the reaction vessel; heating the reaction vessel to a reaction temperature; introducing a nitride coating precursor into the reaction vessel; introducing a co-reactant into the reaction vessel; and maintaining the inert gas flow, co-reactant flow and precursor supply for a time sufficient to moisture-proof the phosphor particles. The nitride treated phosphor particles produced by this method, which can include the deposition of a nitride coating on the particles, have excellent efficacy ratings and strong luminance values in lamps after 100 hours use in high humidity (i.e., >95%).
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: September 24, 2002
    Assignee: Osram Sylvania Inc.
    Inventors: Keith A. Klinedinst, Robert F. Clark
  • Publication number: 20020110620
    Abstract: The present invention relates to a particle comprising an active dispersed in a visco-elastic liquid matrix having a &eegr;′ and a &eegr;″ between 103 to 1014 Pa measured in a cone-and-plate rheometer at 25° C. and a sinusoidal frequencies &ohgr; of 1 Hz.
    Type: Application
    Filed: September 28, 2001
    Publication date: August 15, 2002
    Applicant: Novozymes A/S
    Inventor: Poul Bach
  • Patent number: 6426116
    Abstract: A method for preparing coatings of thin films onto solid particle has been achieved by in-situ simultaneous nucleation and deposition of dissolved material out of supercritical fluid, resultant film formation on the solid particles suspended in the supercritical fluid, and subsequent thermal conditioning of the coating in the particles. The coating method involves an enclosed system that provides: 1) for suspension of the solid particles to be coated; 2) for dissolution of the coating material in the supercritical fluid solvent; 3) for temperature or pressure swing operations causing film deposition/coating of the suspended solid particles and; 4) additional chemical addition and/or thermal cycles providing for any additional reactions required (such as polymerization).
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: July 30, 2002
    Assignee: University of South Florida
    Inventor: Aydin K. Sunol
  • Patent number: 6423411
    Abstract: A method of coating a substrate with an oriented film. A target is ablated to create a plume. The substrate is manipulated, which may be by vibration, in the plume to coat the substrate with a film. The film is heated in a synthesis gel of the target to form the oriented film.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: July 23, 2002
    Assignee: Board of Regents, The University of Texas System
    Inventors: Kenneth J Balkus, Jr., Mary E Kinsel, Ashley S Scott
  • Patent number: 6413292
    Abstract: A polyester dispersion comprising water and a biodegradable copolyester which contains structural units derived from both aliphatic and aromatic carboxylic acids or their derivatives, and the coated fertilizer granules prepared using this polyester dispersion, and a process for their preparation. A fertilization method in which the coated fertilizer granules according to the invention are used.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: July 2, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Horchler v. Locquengh, Motonori Yamamoto, Klaus Erhardt, Son Nguyen Kim, Volker Warzelhan
  • Patent number: 6410087
    Abstract: Pyrolytic carbon of extremely uniform crystalline characteristics and essentially free of discontinuities is obtained in a fluidized bed coater by creating an asymmetric recirculation of the fluidized bed within the high temperature coating chamber. Through the use of any of a variety of gas injection schemes, fluidizing/coating gas mixtures are injected through the three-dimensionally curved concave bottom surface of the coater to create a pattern where the fluidized bed ascends within about one-half of the volume of the coater and then spills over to become a descending bed in the other half.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: June 25, 2002
    Assignee: Medical Carbon Research Institute, LLC
    Inventors: David S. Wilde, Michael R. Emken, James A. Accuntius
  • Publication number: 20020076483
    Abstract: A process for preparing particles of zinc sulfide-based electroluminescent phosphor having a moisture resistant coating thereon which comprises the steps of selecting a reaction vessel having a given height and a porous disc at the bottom thereof; charging the reaction vessel with phosphor particles and fluidizing the particles by introducing an inert gas into the vessel through the porous disc; heating the reaction vessel to a reaction temperature; introducing a coating precursor into the reaction vessel at a position adjacent the bottom of the vessel but above the disc; introducing a co-reactant into the reaction vessel at a position substantially mid-way of the given height; and maintaining the inert gas flow, the precursor flow and the co-reactant flow for a time sufficient for a reaction to occur and coat the phosphor with the moisture resistant coating. Apparatus for carrying out the process is also disclosed.
    Type: Application
    Filed: September 26, 2001
    Publication date: June 20, 2002
    Inventors: Chen-Wen Fan, Dale E. Benjamin
  • Patent number: 6406745
    Abstract: Methods of coating core materials by providing target materials and core materials; ablating the target materials to form ablated particulate target materials; and coating the core materials with said ablated particulate target materials; wherein the method is performed at a pressure of about 10 Torr or higher. Methods of coating particles with nanometer to multiple nanometer thick coatings in atmospheric pressure, and using pneumatic fluidization, are also provided.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: June 18, 2002
    Assignee: Nanosphere, Inc.
    Inventor: James D. Talton
  • Patent number: 6395248
    Abstract: The disclosure describes a process for the production of polycrystalline silicon by a thermal decomposition or hydrogen reduction of a reaction gas consisting of silane gas, which comprises additionally introducing hydrogen chloride into the reaction gas and utilizing the reaction heat generated from the reaction between hydrogen chloride and silicon on the inside of the reactor as an additional heat source.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: May 28, 2002
    Assignee: Korea Research Institute of Chemical Technology
    Inventor: Hee-Young Kim
  • Patent number: 6376011
    Abstract: Superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention contain at least one particle of a superabsorbent material covered with at least a first layer of at least one particle of at least one coating material. The superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention are particularly suitable for use in sanitary napkins, diapers and other disposable absorbent articles that handle complex fluids.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: April 23, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: William G. Reeves, Emmanuelle C. Damay, Wendy L. Hamilton, Patsy A. Hansen, Jack N. Lindon, Heather A. Sorebo
  • Publication number: 20020012652
    Abstract: The present invention relates to novel compositions comprising microspheres and/or nanospheres containing condensed polyanionic bioactive agents, such as DNA. The polyanionic bioactive agent in the microspheres and/or nanospheres is preferably condensed using a polycationic condensing agent, such as poly-L-lysine. The present invention further relates to methods for producing the microspheres and/or nanospheres containing condensed polyanionic bioactive agents.
    Type: Application
    Filed: April 23, 1998
    Publication date: January 31, 2002
    Inventors: ROBERT J. LEVY, VINOD LABHASETWAR, HAGIT COHEN
  • Publication number: 20010055648
    Abstract: A process used to coat particles in an upward flowing fluidized bed dryer includes an insert disposal within the dryer. The insert includes a vertically adjustable cylindrical partition and a vertically adjustable spray nozzle wherein the cylindrical partition has a diameter-to-length ratio greater than 1. The particles are fluidized using a gas and are processed through a coating zone containing the cylindrical partition and become coated with the liquid spray. The particles exit the coating zone and enter the reconditioning zone wherein the liquid is allowed to dry onto the particles. The particles fall into the fluidized bed and are reprocessed through the coating zone by a draft effect created by the atomizing gas in the spray nozzle. The insert provides liquid coating flexibility allowing for the coating of liquid fat onto the particles. Additionally, since less fluidizing gas is required and not all of the particle bed needs to be fluidized, the coating process is more efficient and gentle.
    Type: Application
    Filed: July 27, 2001
    Publication date: December 27, 2001
    Applicant: Primera Foods Corporation
    Inventors: Laurence Lee, Frank Wyatt, Heather Ganske, Eugene H. Sander
  • Publication number: 20010041217
    Abstract: Dry processes for coating titania particles, as well as the coated titania particles produced thereby, are provided. In the subject processes, a moving bed of titania particles is contacted with a gaseous first reactant under conditions sufficient for the first reactant to adsorb on the surface of the particles. Next, the particles having the first reactant adsorbed to their surface are contacted with a gaseous second reactant under conditions such that the second reactant reacts with the surface adsorbed first reactant to produce a product on the surface and in turn yield titania particles coated with a compact layer of the resultant product. The resultant coated titania particles find use in a variety of applications, including as pigments in paints and cosmetics.
    Type: Application
    Filed: October 1, 1999
    Publication date: November 15, 2001
    Inventors: ANGEL SANJURJO, KAI HUNG LAU
  • Patent number: 6316050
    Abstract: Hydrophobic, pyrogenically produced oxides having a ratio of dimethylsilyl groups to monomethylsilyl groups of 100:0 to 50:50 are prepared by using siloxanes or methylsiloxane mixtures D3 to D9 as hydrophobing agent.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: November 13, 2001
    Inventors: Harald Troll, Thomas Hennig, Jurgen Meyer, Uwe Schachtely, Henning Karbe
  • Patent number: 6312521
    Abstract: A process used to coat particles in an upward flowing fluidized bed dryer includes an insert disposal within the dryer. The insert includes a vertically adjustable cylindrical partition and a vertically adjustable spray nozzle wherein the cylindrical partition has a diameter-to-length ratio greater than 1. The particles are fluidized using a gas and are processed through a coating zone containing the cylindrical partition and become coated with the liquid spray. The particles exit the coating zone and enter the reconditioning zone wherein the liquid is allowed to dry onto the particles. The particles fall into the fluidized bed and are reprocessed through the coating zone by a draft effect created by the atomizing gas in the spray nozzle. The insert provides liquid coating flexibility allowing for the coating of liquid fat onto the particles. Additionally, since less fluidizing gas is required and not all of the particle bed needs to be fluidized, the coating process is more efficient and gentle.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: November 6, 2001
    Assignee: Primera Foods Corporation
    Inventors: Laurence Lee, Frank Wyatt, Heather Ganske, Eugene H. Sander
  • Patent number: 6309700
    Abstract: A method of coating phosphor particles that comprises the steps of introducing an inert gas into a reaction vessel; charging phosphor particles into the reaction vessel; heating the reaction vessel to a reaction temperature; introducing a coating precursor into the reaction vessel; introducing an oxygen/ozone mixture into the reaction vessel; and maintaining the agitation, inert gas flow, oxygen/ozone mixture flow and precursor supply for a time sufficient to coat the phosphor particles. This process yields phosphors having a half-life of upwards of 3,100 hours with efficacys of greater than 6 lumens per watt (lm/w).
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: October 30, 2001
    Assignee: Osram Sylvania Inc.
    Inventors: Chen-Wen Fan, Richard G. W. Gingerich, Tuan Anh Dang, Dale E. Benjamin