Patents by Inventor Da REN
Da REN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8574117Abstract: This invention discloses a mechanism with a component position adjusting function, comprising a drive unit, a drive shaft, a plate body, a drive wheel, at least one passive component and a brake. The drive unit performs a forward or reverse rotating shift and drives the drive shaft to rotate. The unidirectional component has a through hole, and disposes at the plate body. An end of the drive shaft is passed through the through hole and exposed from the plate body. The drive shaft synchronously drives the plate body and the drive wheel to rotate forward. The passive component is arranged at the plate body and contacted with the drive shaft with synchronously drives and rotates the passive component. The plate body remains still through the rotation of the unidirectional component and the contact of the brake with the plate body.Type: GrantFiled: September 23, 2011Date of Patent: November 5, 2013Assignee: National Applied Research LaboratoriesInventors: Shian-Wen Chang, Chun-Jen Weng, Da-Ren Liu
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Publication number: 20130256262Abstract: An in situ manufacturing process monitoring system of extreme smooth thin film and method thereof, comprising a coating device for coating a thin film on at least one substrate during a coating process, an ion figuring device for processing a surface polishing process on the thin film, a control device electrically coupled to the coating device and the ion figuring device respectively for controlling the coating device and the ion figuring device processing the coating process and surface polishing process by adjusting at least one device parameter of the coating device and the ion figuring device, and an in situ monitoring device electrically coupled to the control device for in situ monitoring at least one optical parameter of the thin film.Type: ApplicationFiled: October 29, 2012Publication date: October 3, 2013Applicant: National Applied Research LaboratoriesInventors: Chien-Nan Hsiao, Po-Kai Chiu, Da-Ren Liu, James Su, Fong-Zhi Chen
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Publication number: 20130164661Abstract: A method for making a retardation film includes: (a) forming a photo-alignment layer on a substrate; (b) exposing the photo-alignment layer such that first and second regions of the alignment surface are oriented in a first alignment direction; (c) disposing a patterned mask over the photo-alignment layer such that the first regions of the alignment surface are shielded; (d) exposing the second regions such that the second regions are oriented in a second alignment direction, and the first regions remain oriented in the first alignment direction; (e) coating liquid crystal molecules over the alignment surface; and (f) curing the liquid crystal molecules.Type: ApplicationFiled: September 14, 2012Publication date: June 27, 2013Applicant: FAR EASTERN NEW CENTURY CORPORATIONInventors: Chien-Cheng Chang, Chiu-Fang Chen, Da-Ren Chiou, Wei-Che Hung
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Publication number: 20130125815Abstract: A plasma enhanced atomic layer deposition (PEALD) system used to form thin films on substrates includes a plasma chamber, a processing chamber, two or more ring units and a control piece. The plasma chamber includes an outer and an inner quartz tubular units, whose central axes are aligned with each other. Therefore, plasma is held and concentrated in a cylindrical space formed between the outer and outer quartz tubular units. Due to the first and second through holes, the plasma flow may be more evenly distributed on most of the surface of the substrate to form evenly distributed thin films and nano particles on the substrate. In addition, due to the alignment and misalignment between the first and second through holes, the plasma generated in the plasma chamber may be swiftly allowed or disallowed to enter to the processing chamber to prevent the precursor from forming a CVD.Type: ApplicationFiled: March 6, 2012Publication date: May 23, 2013Inventors: Bo-Heng Liu, Chi-Chung Kei, Meng-Yen Tsai, Wen-Hao Cho, Chih-Chieh Yu, Chien-Nan Hsiao, Da-Ren Liu
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Publication number: 20130107190Abstract: A method of preparing a composite optical retarder is provided. A first and a second liquid crystal coating materials are respectively disposed on opposite surfaces of a photoalignment film to respectively form a first and a second optical retarders. The composite optical retarder having the photoalignment film sandwiched by the first and the second optical retarders is thus obtained.Type: ApplicationFiled: February 8, 2012Publication date: May 2, 2013Applicant: Far Eastern New Century CorporationInventors: Da-Ren CHIOU, Tzu-Ying CHEN, Wei-Che HUNG, De-Ling HSU, Chiu-Fang CHEN
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Publication number: 20130064985Abstract: A method for making a retarder includes: (a) forming a photocurable layer on a substrate, the photocurable layer including at least one photocurable prepolymer that has a plurality of reactive functional groups and a functional group equivalent weight ranging from 70 to 700 g/mol; (b) covering partially the photocurable layer using a patterned mask; (c) exposing the photocurable layer through the patterned mask; (d) removing the patterned mask; (e) exposing the photocurable layer to cure second regions of the photocurable layer so as to form a microstructure; (f) forming an alignment layer on the microstructure; (g) forming a liquid crystal layer on the alignment layer; and (h) curing the liquid crystal layer.Type: ApplicationFiled: September 14, 2012Publication date: March 14, 2013Applicant: FAR EASTERN NEW CENTURY CORPORATIONInventors: Da-Ren CHIOU, Wei-Che HUNG, Chiu-Fang CHEN, Yu-June WU
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Publication number: 20130045830Abstract: This invention discloses a mechanism with a component position adjusting function, comprising a drive unit, a drive shaft, a plate body, a drive wheel, at least one passive component and a brake. The drive unit performs a forward or reverse rotating shift and drives the drive shaft to rotate. The unidirectional component has a through hole, and disposes at the plate body. An end of the drive shaft is passed through the through hole and exposed from the plate body. The drive shaft synchronously drives the plate body and the drive wheel to rotate forward. The passive component is arranged at the plate body and contacted with the drive shaft with synchronously drives and rotates the passive component. The plate body remains still through the rotation of the unidirectional component and the contact of the brake with the plate body.Type: ApplicationFiled: September 23, 2011Publication date: February 21, 2013Inventors: Shian-Wen CHANG, Chun-Jen Weng, Da-Ren Liu
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Publication number: 20120114903Abstract: A method for forming a microstructure includes: (a) forming a photocurable layer on a substrate, the photocurable layer including at least one photocurable compound that has a photocurable functional group equivalent weight ranging from 70 to 700 g/mol; (b) covering partially the photocurable layer using a patterned mask; (c) exposing the photocurable layer through the patterned mask using a first light source so that the photocurable layer is cured at first regions which are exposed; (d) removing the patterned mask; and (e) illuminating the photocurable layer using a second light source to cure second regions of the photocurable layer which have not been cured. The first and second regions have different surface heights and provide a surface roughness for the microstructure.Type: ApplicationFiled: September 13, 2011Publication date: May 10, 2012Applicant: FAR EASTERN NEW CENTURY CORPORATIONInventors: Da-Ren Chiou, Wei-Che Hung, Shoh-Yue Lin, Chiu-Fang Chen, Tzu-Ying Chen
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Publication number: 20120080218Abstract: The present invention pertains to a transparent conductive film including a conductive layer having different thicknesses so as to increase the optical transmittance while maintaining the conductivity of the transparent conductive film. The present invention also pertains to a process for the preparation of the above-mentioned transparent conductive film.Type: ApplicationFiled: September 23, 2011Publication date: April 5, 2012Inventors: Da-Ren Chiou, Wei-Che Hung, Shih-Yueh Lin, Chiu-Fang Chen, Tzu-Ying Chen
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Patent number: 8044350Abstract: An apparatus for measuring particle size distribution includes a charging device and a precipitator. The charging device includes a corona that generates charged ions in response to a first applied voltage, and a charger body that generates a low energy electrical field in response to a second applied voltage in order to channel the charged ions out of the charging device. The corona tip and the charger body are arranged relative to each other to direct a flow of particles through the low energy electrical field in a direction parallel to a direction in which the charged ions are channeled out of the charging device. The precipitator receives the plurality of particles from the charging device, and includes a disk having a top surface and an opposite bottom surface, wherein a predetermined voltage is applied to the top surface and the bottom surface to precipitate the plurality of particles.Type: GrantFiled: December 1, 2008Date of Patent: October 25, 2011Assignee: Washington UniversityInventors: Da-Ren Chen, Chaolong Qi
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Patent number: 8028646Abstract: Methods and systems for coating at least a portion of a medical device (e.g., a stent structure) include providing a plurality of coating particles (e.g., monodisperse coating particles) in a defined volume. For example, the particles may be provided using one or more nozzle structures, wherein each nozzle structure includes at least one opening terminating at a dispensing end. The plurality of coating particles may be provided in the defined volume by dispensing a plurality of microdroplets having an electrical charge associated therewith from the dispensing ends of the one or more nozzle structures through use of a nonuniform electrical field between the dispensing ends and the medical device. Electrical charge is concentrated on the particle as the microdroplet evaporates. With a plurality of coating particles provided in the defined volume, such particles can be moved towards at least one surface of the medical device to form a coating thereon (e.g.Type: GrantFiled: March 28, 2006Date of Patent: October 4, 2011Assignee: Regents of the University of MinnesotaInventors: David Y. H. Pui, Da-Ren Chen
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Publication number: 20110229627Abstract: Electrospray methods and systems for coating of objects (e.g., medical devices such as a stent structure) with selected types of coatings (e.g.Type: ApplicationFiled: May 27, 2011Publication date: September 22, 2011Applicants: NANOCOPOEIA, INC., Regents of the University of MinnesotaInventors: ROBERT A. HOERR, JOHN V. CARLSON, DA-REN CHEN, DAVID Y.H. PUI
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Publication number: 20110174902Abstract: Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an interozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.Type: ApplicationFiled: March 29, 2011Publication date: July 21, 2011Applicant: Regents of the University of MinnesotaInventors: David Y.H. Pui, Da-Ren Chen
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Patent number: 7972661Abstract: An electrospraying apparatus and/or method is used to coat particles. For example, a flow including at least one liquid suspension may be provided through at least one opening at a spray dispenser end. The flow includes at least particles and a coating material. A spray of microdroplets suspending at least the particles is established forward of the spray dispenser end by creating a nonuniform electrical field between the spray dispenser end and an electrode electrically isolated therefrom. The particles are coated with at least a portion of the coating material as the microdroplet evaporates. For example, the suspension may include biological material particles.Type: GrantFiled: October 4, 2007Date of Patent: July 5, 2011Assignee: Regents of the University of MinnesotaInventors: David Y. H. Pui, Da-Ren Chen
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Publication number: 20110139970Abstract: Detection of individual objects using a light source and a whispering gallery mode (WGM) resonator. Light from the whispering gallery mode (WGM) resonator is analyzed. The presence of an object is determined based on mode splitting associated with the light received by the photodetector. For example, the presence of the object may be determined based on the distance between two whispering gallery modes and/or the linewidths of the two modes in a transmission spectrum. Alternatively, the presence of the object may be determined based on a beat frequency that is determined based on a heterodyne beat signal produced by combining split laser modes in the received light from a WGM microcavity laser.Type: ApplicationFiled: December 13, 2010Publication date: June 16, 2011Applicant: WASHINGTON UNIVERSITY IN ST. LOUISInventors: Lina He, Jiangang Zhu, Sahin Kaya Ozdemir, Lan Yang, Da-Ren Chen
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Patent number: 7951428Abstract: Electrospray methods and systems for coating of objects (e.g., medical devices such as a stent structure) with an open matrix coating. The open matrix coating is formed by electrospray using one or more nozzle structures each having at least an inner and outer opening. A first flow of a liquid spray composition is provided to the inner opening and a second flow of a liquid diluent composition is provided to the outer opening (e.g., the liquid diluent composition including at least one solvent, such as a composition having a dielectric constant equal to or greater than 10).Type: GrantFiled: January 31, 2007Date of Patent: May 31, 2011Assignee: Regents of the University of MinnesotaInventors: Robert A. Hoerr, John V. Carlson, Da-Ren Chen, David Y. H. Pui
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Publication number: 20100001184Abstract: An apparatus for measuring particle size distribution includes a charging device and a precipitator. The charging device includes a corona that generates charged ions in response to a first applied voltage, and a charger body that generates a low energy electrical field in response to a second applied voltage in order to channel the charged ions out of the charging device. The corona tip and the charger body are arranged relative to each other to direct a flow of particles through the low energy electrical field in a direction parallel to a direction in which the charged ions are channeled out of the charging device. The precipitator receives the plurality of particles from the charging device, and includes a disk having a top surface and an opposite bottom surface, wherein a predetermined voltage is applied to the top surface and the bottom surface to precipitate the plurality of particles.Type: ApplicationFiled: December 1, 2008Publication date: January 7, 2010Applicant: Washington University in St. LouisInventors: Da-Ren Chen, Chaolong Qi
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Publication number: 20090266924Abstract: Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.Type: ApplicationFiled: February 27, 2009Publication date: October 29, 2009Applicant: Regents of the University of MinnesotaInventors: David Y.H. Pui, Da-Ren Chen
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Patent number: 7498063Abstract: Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.Type: GrantFiled: July 12, 2004Date of Patent: March 3, 2009Assignee: Regents of the University of MinnesotaInventors: David Y. H. Pui, Da-Ren Chen
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Publication number: 20080141936Abstract: An electrospraying apparatus and/or method is used to coat particles. For example, a flow including at least one liquid suspension may be provided through at least one opening at a spray dispenser end. The flow includes at least particles and a coating material. A spray of microdroplets suspending at least the particles is established forward of the spray dispenser end by creating a nonuniform electrical field between the spray dispenser end and an electrode electrically isolated therefrom. The particles are coated with at least a portion of the coating material as the microdroplet evaporates. For example, the suspension may include biological material particles.Type: ApplicationFiled: October 4, 2007Publication date: June 19, 2008Applicant: Regents of the University of MinnesotaInventors: David Y.H. Pui, Da-Ren Chen