Patents by Inventor Chih-Hung Chang

Chih-Hung Chang 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).

  • Patent number: 8614190
    Abstract: Thermal responsive compositions for treating bone diseases are provided. The thermal responsive composition for treating bone diseases includes a bone growth factor and a biodegradable copolymer. The biodegradable copolymer has a structure of Formula (I) or Formula (II): A-B-BOX-B-A??Formula (I) B-A-B-(BOX-B-A-B)n-BOX-B-A-B??Formula (II) wherein, A includes a hydrophilic polyethylene glycol polymer, B includes a hydrophobic polyester polymer, BOX is a bifunctional group monomer of 2, 2?-Bis(2-oxazoline) and used for coupling the blocks A-B or B-A-B, and n is an integer and the same or more than 0.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: December 24, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Shen-Hua Peng, Hsin-Hsin Shen, Liang-Yo Yang, Meng-Yow Hsieh, Pei-Shan Li, Wei-Lin Yu, Tsai-Yu Lin, Po-Liang Lai, Jui-Sheng Sun, Chih-Hung Chang, Yi-Hung Lin
  • Patent number: 8553333
    Abstract: Embodiments of the present system and method are useful for chemical deposition, particularly continuous deposition of anti-reflective films. Disclosed systems typically comprise a micromixer and a microchannel applicator. A deposition material or materials is applied to a substrate to form a nanostructured, anti-reflective coating. Uniform and highly oriented surface morphologies of films deposited using disclosed embodiments are clearly improved compared to films deposited by a conventional batch process. In some embodiments, a scratch-resistant, anti-reflective coating is applied to a polycarbonate substrate, such as a lens. In certain embodiments, an anti-reflective coating is applied to a surface of a solar catalytic microreactor suitable for performing endothermic reactions, where energy is provided to the reactor by absorption of solar radiation. The composition and morphology of the material deposited on a substrate can be tailored.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: October 8, 2013
    Assignee: State of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University
    Inventors: Chih-hung Chang, Seung-Yeol Han, Brian K. Paul
  • Publication number: 20120298037
    Abstract: Embodiments of an apparatus, system, and method for chemical synthesis and/or analysis are disclosed. One embodiment of a disclosed apparatus comprises a laminated, microfluidic structure defining a reactor and a separator. Such apparatuses, or portions thereof, generally have dimensions ranging from about 1 micrometer to about 100 micrometers. To implement synthetic processes, disclosed embodiments of the apparatus generally include at least one unit operation, such as a mixer, a valve, a separator, a detector, and combinations thereof. Individual apparatuses may be coupled both in series and in parallel to form a system for making chemical compounds. An individual apparatus or a system also can be used in combination with known devices and processes.
    Type: Application
    Filed: June 5, 2012
    Publication date: November 29, 2012
    Inventors: Brian Kevin Paul, Chih-hung Chang, Vincent Thomas Remcho
  • Publication number: 20120292246
    Abstract: The present disclosure describes devices useful for microscale fluid purification, separation, and synthesis. Such devices generally comprise a fluid membrane that separates two or more fluids flowing through plural microchannels operatively associated with the membrane. Often, the membrane is a semipermeable membrane, such as might be used with a filtration device, such as a dialyzer. Devices of the present invention can be combined with other microscale devices to make systems. For example, the devices may be coupled with one or more microchemical microfactories, one or more micromixers, one or more microheaters, etc. Examples of devices made according to the present invention included an oxygenator, a dialyzer, microheat exchangers, etc.
    Type: Application
    Filed: July 27, 2012
    Publication date: November 22, 2012
    Inventors: Goran Jovanovic, Sundar V. Atre, Brian Kevin Paul, John Simonsen, Vincent Thomas Remcho, Chih-Hung Chang
  • Patent number: 8304570
    Abstract: A prepolymer for biomedical materials has the following formula: wherein X1 represents aliphatic compounds or aromatic compounds, X3 represents alkene-containing compounds, and X2 represents siloxane compounds having the following formula. In one embodiment of the present invention, n is between 1 and 20, m is between 10 and 20, and y is between 1 and 7.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: November 6, 2012
    Inventors: Yun Liang Ouyang, Chih Hung Chang
  • Patent number: 8273245
    Abstract: The present disclosure describes devices useful for microscale fluid purification, separation, and synthesis. Such devices generally comprise a fluid membrane that separates two or more fluids flowing through plural microchannels operatively associated with the membrane. Often, the membrane is a semipermeable membrane, such as might be used with a filtration device, such as a dialyzer. Devices of the present invention can be combined with other microscale devices to make systems. For example, the devices may be coupled with one or more microchemical microfactories, one or more micromixers, one or more microheaters, etc. Examples of devices made according to the present invention included an oxygenator, a dialyzer, microheat exchangers, etc.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: September 25, 2012
    Assignee: State of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University
    Inventors: Goran Nadezda Jovanovic, Sundar V. Atre, Brian Kevin Paul, Vincent Thomas Remcho, Chih-hung Chang
  • Patent number: 8236599
    Abstract: Disclosed embodiments provide a solution-based process for producing useful materials, such as semiconductor materials. One disclosed embodiment comprises providing at least a first reactant and a second reactant in solution and applying the solution to a substrate. The as-deposited material is thermally annealed to form desired compounds. Thermal annealing may be conducted under vacuum; under an inert atmosphere; or under a reducing environment. The method may involve using metal and chalcogen precursor compounds. One example of a metal precursor compound is a metal halide. Examples of suitable chalcogen precursor compounds include a chalcogen powder, a chalcogen halide, a chalcogen oxide, a chalcogen urea, a chalcogen or dichalcogen comprising organic ligands, or combinations thereof. Certain disclosed embodiments concern a method for making a solar cell from I-III-VI semiconductors.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: August 7, 2012
    Assignee: State of Oregon acting by and through the State Board of Higher Education
    Inventors: Chih-hung Chang, Wei Wang
  • Publication number: 20120176681
    Abstract: Embodiments of the present system and method are useful for chemical deposition, particularly continuous deposition of anti-reflective films. Disclosed systems typically comprise a micromixer and a microchannel applicator. A deposition material or materials is applied to a substrate to form a nanostructured, anti-reflective coating. Uniform and highly oriented surface morphologies of films deposited using disclosed embodiments are clearly improved compared to films deposited by a conventional batch process. In some embodiments, a scratch-resistant, anti-reflective coating is applied to a polycarbonate substrate, such as a lens. In certain embodiments, an anti-reflective coating is applied to a surface of a solar catalytic microreactor suitable for performing endothermic reactions, where energy is provided to the reactor by absorption of solar radiation. The composition and morphology of the material deposited on a substrate can be tailored.
    Type: Application
    Filed: July 22, 2011
    Publication date: July 12, 2012
    Inventors: Chih-hung Chang, Seung-Yeol Han, Brian K. Paul
  • Publication number: 20120074062
    Abstract: The present disclosure describes devices useful for microscale fluid purification, separation, and synthesis. Such devices generally comprise a fluid membrane that separates two or more fluids flowing through plural microchannels operatively associated with the membrane. Often, the membrane is a semipermeable membrane, such as might be used with a filtration device, such as a dialyzer. Devices of the present invention can be combined with other microscale devices to make systems. For example, the devices may be coupled with one or more microchemical microfactories, one or more micromixers, one or more microheaters, etc. Examples of devices made according to the present invention included an oxygenator, a dialyzer, microheat exchangers, etc.
    Type: Application
    Filed: November 9, 2011
    Publication date: March 29, 2012
    Inventors: Goran Jovanovic, Sundar V. Atre, Brian Kevin Paul, John Simonsen, Vincent Thomas Remcho, Chih-Hung Chang
  • Patent number: 8143616
    Abstract: A structure includes a surface and a non-equilibrium two-dimensional semiconductor micro structure on the surface.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: March 27, 2012
    Assignees: Oregon State University, Hewlett Packard Development Company, L.P.
    Inventors: Gregory S. Herman, Peter Mardilovich, Chinmay Betrabet, Chih-hung Chang, Yu-jen Chang, Doo-Hyoung Lee, Mark W. Hoskins
  • Patent number: 8137554
    Abstract: The present disclosure describes devices useful for microscale fluid purification, separation, and synthesis devices. Generally, such devices comprise a fluid membrane that separates two or more fluids flowing through plural microchannels operatively associated with the membrane. The fluids can both be liquids, gases, or a liquid and a gas, such as may be used for gas absorption into a liquid. Often, the membrane is a semipermeable membrane, such as might be used with a filtration device, such as a dialyzer. Devices of the present invention can be combined with other microscale devices to make systems. For example, the devices may be coupled with one or more microchemical microfactories, one or more micromixers, one or more microheaters; etc. Examples of devices made according to the present invention included an oxygenator, a dialzyer, microheat exchangers, etc. Particular materials had to be developed for use with certain embodiments of the device disclosed herein.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: March 20, 2012
    Assignee: State of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University
    Inventors: Goran Jovanovic, Sundar V. Atre, Brian Kevin Paul, John Simonsen, Vincent Thomas Remcho, Chih-Hung Chang
  • Publication number: 20120010139
    Abstract: Thermal responsive compositions for treating bone diseases are provided. The thermal responsive composition for treating bone diseases includes a bone growth factor and a biodegradable copolymer. The biodegradable copolymer has a structure of Formula (I) or Formula (II): A-B-BOX-B-A??(Formula I) and B-A-B-(BOX-B-A-B)n-BOX-B-A-B??Formula (II), wherein, A includes a hydrophilic polyethylene glycol polymer, B includes a hydrophobic polyester polymer, BOX is a bifunctional group monomer of 2,2?-Bis(2-oxazoline) and used for coupling the blocks A-B or B-A-B, and n is an integer and the same or more than 0.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 12, 2012
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shen-Hua Peng, Hsin-Hsin Shen, Liang-Yo Yang, Meng-Yow Hsieh, Pei-Shan Li, Wei-Lin Yu, Tsai-Yu Lin, Po-Liang Lai, Jui-Sheng Sun, Chih-Hung Chang, Yi-Hung Lin
  • Publication number: 20120001356
    Abstract: Embodiments of a continuous-flow injection reactor and a method for continuous material synthesis are disclosed. The reactor includes a mixing zone unit and a residence time unit removably coupled to the mixing zone unit. The mixing zone unit includes at least one top inlet, a side inlet, and a bottom inlet. An injection tube, or plurality of injection tubes, is inserted through the top inlet and extends past the side inlet while terminating above the bottom outlet. A first reactant solution flows in through the side inlet, and a second reactant solution flows in through the injection tube(s). With reference to nanoparticle synthesis, the reactant solutions combine in a mixing zone and form nucleated nanoparticles. The nucleated nanoparticles flow through the residence time unit. The residence time unit may be a single conduit, or it may include an outer housing and a plurality of inner tubes within the outer housing.
    Type: Application
    Filed: June 10, 2011
    Publication date: January 5, 2012
    Inventors: Chih-hung Chang, Hyungdae Jin
  • Publication number: 20110253629
    Abstract: The present disclosure describes devices useful for microscale fluid purification, separation, and synthesis devices. Generally, such devices comprise a fluid membrane that separates two or more fluids flowing through plural microchannels operatively associated with the membrane. The fluids can both be liquids, gases, or a liquid and a gas, such as may be used for gas absorption into a liquid. Often, the membrane is a semipermeable membrane, such as might be used with a filtration device, such as a dialyzer. Devices of the present invention can be combined with other microscale devices to make systems. For example, the devices may be coupled with one or more microchemical microfactories, one or more micromixers, one or more microheaters; etc. Examples of devices made according to the present invention included an oxygenator, a dialzyer, microheat exchangers, etc. Particular materials had to be developed for use with certain embodiments of the device disclosed herein.
    Type: Application
    Filed: April 29, 2011
    Publication date: October 20, 2011
    Inventors: Goran Jovanovic, Sundar V. Atre, Brian Kevin Paul, John Simonsen, Vincent Thomas Remcho, Chih-Hung Chang
  • Patent number: 8030574
    Abstract: A flexible printed circuit includes a flexible substrate, a plurality of first conductive wires, and a plurality of second conductive wires. The flexible substrate includes a first surface and a second surface facing the first surface. The first conductive wires are provided on the first surface. The first conductive wires extend from an edge of the flexible substrate to another edge of the flexible substrate. The second conductive wires are provided on the second surface. The second conductive wires extend from an end of the flexible substrate to a predetermined portion of the flexible substrate. A part of each second conductive wire at the predetermined portion of the flexible substrate is electrically connected with the first conductive wire via a conductive structure.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: October 4, 2011
    Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux Corporation
    Inventors: Wen-Bin Lin, Chih-Hung Chang
  • Publication number: 20110203772
    Abstract: A system and method for performing heat dissipation is disclosed that includes contacting a heat transfer liquid with a heat exchange surface having raised hydrophilic nanoporous nanostructures disposed adjacent a central core upon a substrate. The heat transfer liquid forms a preselected contact angle when placed on the heat exchange surface. The raised nanoporous nanostructures define channels, interconnected pathways, and voids within the nanoporous nanostructures. The nanoporous nanostructures have additional surface irregularities upon the nanostructures themselves. The nanostructures are preferably formed by depositing metal oxides or other materials upon a substrate using a Microreactor Assisted Nanomaterial Deposition (MAND) process.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 25, 2011
    Applicants: BATTELLE MEMORIAL INSTITUTE, OREGON STATE UNIVERSITY
    Inventors: Terry J. Hendricks, Chih-Hung Chang, Daniel R. Palo, Brian K. Paul
  • Patent number: 7955504
    Abstract: The present disclosure describes devices useful for microscale fluid purification, separation, and synthesis devices. Generally, such devices comprise a fluid membrane that separates two or more fluids flowing through plural microchannels operatively associated with the membrane. Often, the membrane is a semipermeable membrane, such as might be used with a filtration device, such as a dialyzer. Devices of the present invention can be combined with other microscale devices to make systems. For example, the devices may be coupled with one or more microchemical microfactories, one or more micromixers, one or more microheaters; etc. Particular materials had to be developed for use with certain embodiments of the device disclosed herein. For example, a new composite material was made comprising nanocrystalline cellulose filler and a polysulfone polymeric material. A dialyzer comprising the composite membrane also is disclosed.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: June 7, 2011
    Assignee: State of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University
    Inventors: Goran Jovanovic, Sundar V. Atre, Brian Kevin Paul, John Simonsen, Vincent Thomas Remcho, Chih-Hung Chang
  • Publication number: 20110120371
    Abstract: Embodiments of the present system and method are useful for chemical deposition, particularly continuous deposition of thin films. Disclosed systems typically comprise a micromixer and a microchannel applicator. A deposition material or materials is applied to a substrate, such as an oxidized silicon substrate, a flexible substrate useful for forming flexible devices, such as flexible transistors, and combinations of different substrates. Uniform and highly oriented surface morphologies of films deposited using disclosed embodiments are clearly improved compared to films deposited by a conventional batch process. The process can be used to tailor the composition and morphology of the material deposited on a substrate. The present process can be used at low temperatures as a post-deposition, high-temperature annealing step is obviated.
    Type: Application
    Filed: November 22, 2010
    Publication date: May 26, 2011
    Inventor: Chih-hung Chang
  • Patent number: 7846489
    Abstract: Embodiments of the present system and method are useful for chemical deposition, particularly continuous deposition of thin films. Disclosed systems typically comprise a micromixer and a microchannel applicator. A deposition material or materials is applied to a substrate, such as an oxidized silicon substrate, a flexible substrate useful for forming flexible devices, such as flexible transistors, and combinations of different substrates. Uniform and highly oriented surface morphologies of films deposited using disclosed embodiments are clearly improved compared to films deposited by a conventional batch process. The process can be used to tailor the composition and morphology of the material deposited on a substrate. The present process can be used at low temperatures as a post-deposition, high-temperature annealing step is obviated.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: December 7, 2010
    Assignee: State of Oregon acting by and though the State Board of Higher Education on behalf of Oregon State University
    Inventor: Chih-hung Chang
  • Patent number: D641094
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: July 5, 2011
    Inventor: Chih-Hung Chang