Patents by Inventor Stephen Hsu

Stephen Hsu 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).

  • Publication number: 20150056194
    Abstract: Methods of treating liver disease in a subject, including administering to the subject an effective amount of one or more modified green tea polyphenols to reduce, decrease, limit or prevent one or more symptoms of liver disease relative to an untreated control subject are provided. In a preferred embodiment the one or more modified green tea polyphenols are administered at a dose of 400 mg/kg body weight five times weekly. In some embodiments the disclosed methods further include administering to the subject one or more additional pharmaceutically active agents. In one embodiment the one or more additional pharmaceutically active agents is a chemotherapeutic agent.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 26, 2015
    Inventor: Stephen Hsu
  • Publication number: 20150025132
    Abstract: Compositions and methods of killing, inactivating, or otherwise reducing the spores such as bacterial spores are disclosed. The methods typically include reducing or preventing spore reactivation comprising contacting spores with an effective amount of one or more green tea polyphenols (GTP), one or more modified green tea polyphenols (LTP), or a combination thereof. In a preferred embodiment, the LTP is (?)-epigallocatechin-3-gallate (EGCG) esterified at the 4? position with stearic acid, EGCG esterified at the 4? position with palmitic acid, or a combination thereof. The compositions and methods can be used in a variety of applications, for example, to increase the shelf-life of a food or a foodstuff, to reduce or delay the spoilage of a food or a foodstuff, or to decontaminate a device contaminated with spores.
    Type: Application
    Filed: July 16, 2014
    Publication date: January 22, 2015
    Inventors: Stephen Hsu, Lee H. Lee, Tin-Chun Chu
  • Patent number: 8910091
    Abstract: A method of generating complementary masks based on a target pattern having features to be imaged on a substrate for use in a multiple-exposure lithographic imaging process is disclosed. The method includes defining an initial H-mask and an initial V-mask corresponding to the target pattern; identifying horizontal critical features in the H-mask and vertical critical features in the V-mask; assigning a first phase shift and a first percentage transmission to the horizontal critical features, which are to be formed in the H-mask; and assigning a second phase shift and a second percentage transmission to the vertical critical features, which are to be formed in the V-mask. The method further includes the step of assigning chrome to all non-critical features in the H-mask and the V-mask.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: December 9, 2014
    Assignee: ASML Netherlands B.V.
    Inventors: Jang Fung Chen, Duan-Fu Stephen Hsu, Douglas Van Den Broeke
  • Publication number: 20140240507
    Abstract: The system to proctor an examination includes a first camera worn by the examination taking subject and directed to capture images in subject's field of vision. A second camera is positioned to record an image of the subject's face during the examination. A microphone captures sounds within the room, which are analyzed to detect speech utterances. The computer system is programmed to store captured images from said first camera. The computer is also programmed to issue prompting events instructing the subject to look in a direction specified by the computer at event intervals not disclosed to subject in advance and to index for analysis the captured images in association with indicia corresponding to the prompting events.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 28, 2014
    Inventors: Stephen Hsu, Xiaoming Liu, Xiangyang Alexander Liu
  • Publication number: 20140050844
    Abstract: The metallurgical composition of a machine surface may be determined. Based on the composition of the surface layer and its substrate materials, a mixture of pure metal nanoparticles, each coated with a monomolecular organic layer adsorbed on its surface can be mixed with catalysts, reaction initiators, and/or other necessary ingredients for the repair action of the machine surface, depending on the specific machine, operational type, and/or the nature of the damage. The nanoparticles are applied to the machine surface, the organic monolayer wears away from the nanoparticles under shear stresses and the nanoparticles adhere to the machine surface to form a repair layer on the machine surface, thereby providing a repaired surface.
    Type: Application
    Filed: February 21, 2012
    Publication date: February 20, 2014
    Applicant: The George Washington University
    Inventor: Stephen Hsu
  • Patent number: 8644589
    Abstract: A method for decomposing a target circuit pattern containing features to be imaged into multiple patterns. The process includes the steps of separating the features to be printed into a first pattern and a second pattern; performing a first optical proximity correction process on the first pattern and the second pattern; determining an imaging performance of the first pattern and the second pattern; determining a first error between the first pattern and the imaging performance of the first pattern, and a second error between the second pattern and the imaging performance of said second pattern; utilizing the first error to adjust the first pattern to generate a modified first pattern; utilizing the second error to adjust the second pattern to generate a modified second pattern; and applying a second optical proximity correction process to the modified first pattern and the modified second pattern.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 4, 2014
    Assignee: ASML Masktools B.V.
    Inventors: Duan-Fu Stephen Hsu, Jungchul Park, Doug Van Den Broeke, Jang Fung Chen
  • Patent number: 8632930
    Abstract: A method of generating complementary masks for use in a dark field double dipole imaging process. The method includes the steps of identifying a target pattern having a plurality of features, including horizontal and vertical features; generating a horizontal mask based on the target pattern, where the horizontal mask includes low contrast vertical features. The generation of the horizontal mask includes the steps of optimizing the bias of the low contrast vertical features contained in the horizontal mask; and applying assist features to the horizontal mask. The method further includes generating a vertical mask based on the target pattern, where the vertical mask contains low contrast horizontal features. The generation of the vertical mask includes the steps of optimizing the bias of low contrast horizontal features contained in the vertical mask; and applying assist features to the vertical mask.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: January 21, 2014
    Assignee: ASML Masktools B.V.
    Inventors: Duan-Fu Stephen Hsu, Sangbong Park, Douglas Van Den Broeke, Jang Fung Chen
  • Patent number: 8629064
    Abstract: The present invention relates to lithographic apparatuses and processes, and more particularly to multiple patterning lithography for printing target patterns beyond the limits of resolution of the lithographic apparatus. Self-aligned assist pattern (SAP) is derived from original design layout in an automated manner using geometric Boolean operations based on some predefined design rules, and are included in the mask layout for efficient self-alignment of various sub-layouts of the target pattern during a multiple patterning lithography process. SAP can be of any shape and size, and can have continuous features (e.g., a ring), or discontinuous (e.g., bars not connected to each other) features. An end-to-end multiple patterning lithography using spacer and SAP may use positive tone lithography, and/or negative tone lithography for line and/or space printing.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: January 14, 2014
    Assignee: ASML Netherlands B.V.
    Inventors: Xiaoyang Li, Duan-Fu Stephen Hsu
  • Publication number: 20130182940
    Abstract: A method for decomposing a target circuit pattern containing features to be imaged into multiple patterns. The process includes the steps of separating the features to be printed into a first pattern and a second pattern; performing a first optical proximity correction process on the first pattern and the second pattern; determining an imaging performance of the first pattern and the second pattern; determining a first error between the first pattern and the imaging performance of the first pattern, and a second error between the second pattern and the imaging performance of said second pattern; utilizing the first error to adjust the first pattern to generate a modified first pattern; utilizing the second error to adjust the second pattern to generate a modified second pattern; and applying a second optical proximity correction process to the modified first pattern and the modified second pattern.
    Type: Application
    Filed: March 5, 2013
    Publication date: July 18, 2013
    Applicant: ASML NETHERLANDS B.V.
    Inventors: Duan-Fu Stephen Hsu, Jung Chul Park, Douglas Van Den Broeke, Jang Fung Chen
  • Patent number: 8486589
    Abstract: A method of splitting a lithographic pattern into two sub-patterns, includes generating test structures corresponding to structures of interest in the lithographic pattern, varying the test structures through a selected range of dimensions, simulating an image of the test structures, determining an image quality metric for the simulated image, analyzing the determined image quality metric to determine pitch ranges for which split improves the image quality metric and ranges for which split does not improve the image quality metric, and generating the two sub-patterns in accordance with the determined pitch ranges.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: July 16, 2013
    Assignee: ASML Netherlands B.V.
    Inventors: Duan-Fu Stephen Hsu, JooByoung Kim
  • Patent number: 8391605
    Abstract: A method for decomposing a target circuit pattern containing features to be imaged into multiple patterns. The process includes the steps of separating the features to be printed into a first pattern and a second pattern; performing a first optical proximity correction process on the first pattern and the second pattern; determining an imaging performance of the first pattern and the second pattern; determining a first error between the first pattern and the imaging performance of the first pattern, and a second error between the second pattern and the imaging performance of said second pattern; utilizing the first error to adjust the first pattern to generate a modified first pattern; utilizing the second error to adjust the second pattern to generate a modified second pattern; and applying a second optical proximity correction process to the modified first pattern and the modified second pattern.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: March 5, 2013
    Assignee: ASML Masktools B.V.
    Inventors: Duan-Fu Stephen Hsu, Jung Chul Park, Douglas Van Den Broeke, Jang Fung Chen
  • Publication number: 20130055171
    Abstract: A method of generating complementary masks based on a target pattern having features to be imaged on a substrate for use in a multiple-exposure lithographic imaging process is disclosed. The method includes defining an initial H-mask and an initial V-mask corresponding to the target pattern; identifying horizontal critical features in the H-mask and vertical critical features in the V-mask; assigning a first phase shift and a first percentage transmission to the horizontal critical features, which are to be formed in the H-mask; and assigning a second phase shift and a second percentage transmission to the vertical critical features, which are to be formed in the V-mask. The method further includes the step of assigning chrome to all non-critical features in the H-mask and the V-mask.
    Type: Application
    Filed: February 21, 2012
    Publication date: February 28, 2013
    Applicant: ASML MaskTools B.V.
    Inventors: Jang Fung Chen, Duan-Fu Stephen Hsu, Douglas Van Den Broeke
  • Publication number: 20120208113
    Abstract: A method of splitting a lithographic pattern into two sub-patterns, includes generating test structures corresponding to structures of interest in the lithographic pattern, varying the test structures through a selected range of dimensions, simulating an image of the test structures, determining an image quality metric for the simulated image, analyzing the determined image quality metric to determine pitch ranges for which split improves the image quality metric and ranges for which split does not improve the image quality metric, and generating the two sub-patterns in accordance with the determined pitch ranges.
    Type: Application
    Filed: April 24, 2012
    Publication date: August 16, 2012
    Applicant: ASML Netherlands B.V.
    Inventors: Duan-Fu Stephen Hsu, JooByoung Kim
  • Patent number: 8182969
    Abstract: A method of splitting a lithographic pattern into two sub-patterns, includes generating test structures corresponding to structures of interest in the lithographic pattern, varying the test structures through a selected range of dimensions, simulating an image of the test structures, determining an image quality metric for the simulated image, analyzing the determined image quality metric to determine pitch ranges for which split improves the image quality metric and ranges for which split does not improve the image quality metric, and generating the two sub-patterns in accordance with the determined pitch ranges.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: May 22, 2012
    Assignee: ASML Netherlands B.V.
    Inventors: Duan-Fu Stephen Hsu, JooByoung Kim
  • Publication number: 20120122023
    Abstract: A method for decomposing a target circuit pattern containing features to be imaged into multiple patterns. The process includes the steps of separating the features to be printed into a first pattern and a second pattern; performing a first optical proximity correction process on the first pattern and the second pattern; determining an imaging performance of the first pattern and the second pattern; determining a first error between the first pattern and the imaging performance of the first pattern, and a second error between the second pattern and the imaging performance of said second pattern; utilizing the first error to adjust the first pattern to generate a modified first pattern; utilizing the second error to adjust the second pattern to generate a modified second pattern; and applying a second optical proximity correction process to the modified first pattern and the modified second pattern.
    Type: Application
    Filed: January 25, 2012
    Publication date: May 17, 2012
    Applicant: ASML MaskTools B.V.
    Inventors: Duan-Fu Stephen Hsu, Jung Chul Park, Douglas Van Den Broeke, Jang Fung Chen
  • Patent number: 8132130
    Abstract: A method for forming exposure masks for imaging a target pattern having features to be imaged on a substrate in a multi-exposure process. The method includes the steps of generating a set of decomposition rules defining whether a given feature of the target pattern is assigned to a first exposure mask or a second exposure mask; applying the decomposition rules to each of the features in the target pattern so as to assign each of the features in the target pattern to one of the first exposure mask or second exposure mask; and generating the first exposure mask and the second exposure mask containing the respective features assigned to each mask.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: March 6, 2012
    Assignee: ASML Masktools B.V.
    Inventors: Jang Fung Chen, Duan-Fu Stephen Hsu, Douglas Van Den Broeke, Thomas Laidig
  • Patent number: 8122391
    Abstract: A method of generating complementary masks based on a target pattern having features to be imaged on a substrate for use in a multiple-exposure lithographic imaging process. The method includes the steps of: defining an initial H-mask corresponding to the target pattern; defining an initial V-mask corresponding to the target pattern; identifying horizontal critical features in the H-mask having a width which is less than a predetermined critical width; identifying vertical critical features in the V-mask having a width which is less than a predetermined critical width; assigning a first phase shift and a first percentage transmission to the horizontal critical features, which are to be formed in the H-mask; and assigning a second phase shift and a second percentage transmission to the vertical critical features, which are to be formed in the V-mask. The method further includes the step of assigning chrome to all non-critical features in the H-mask and the V-mask.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: February 21, 2012
    Assignee: ASML Masktools B.V.
    Inventors: Jang Fung Chen, Duan-Fu Stephen Hsu, Douglas Van Den Broeke
  • Patent number: 8111921
    Abstract: A method for decomposing a target circuit pattern containing features to be imaged into multiple patterns. The process includes the steps of separating the features to be printed into a first pattern and a second pattern; performing a first optical proximity correction process on the first pattern and the second pattern; determining an imaging performance of the first pattern and the second pattern; determining a first error between the first pattern and the imaging performance of the first pattern, and a second error between the second pattern and the imaging performance of said second pattern; utilizing the first error to adjust the first pattern to generate a modified first pattern; utilizing the second error to adjust the second pattern to generate a modified second pattern; and applying a second optical proximity correction process to the modified first pattern and the modified second pattern.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: February 7, 2012
    Assignee: ASML Masktools B.V.
    Inventors: Duan-Fu Stephen Hsu, Jung Chul Park, Douglas Van Den Broeke, Jang Fung Chen
  • Publication number: 20110318927
    Abstract: The present invention relates to lithographic apparatuses and processes, and more particularly to multiple patterning lithography for printing target patterns beyond the limits of resolution of the lithographic apparatus. Self-aligned assist pattern (SAP) is derived from original design layout in an automated manner using geometric Boolean operations based on some predefined design rules, and are included in the mask layout for efficient self-alignment of various sub-layouts of the target pattern during a multiple patterning lithography process. SAP can be of any shape and size, and can have continuous features (e.g., a ring), or discontinuous (e.g., bars not connected to each other) features. An end-to-end multiple patterning lithography using spacer and SAP may use positive tone lithography, and/or negative tone lithography for line and/or space printing.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Applicant: ASML Netherlands B.V.
    Inventors: Xiaoyang Li, Duan-Fu Stephen Hsu
  • Publication number: 20110236808
    Abstract: A method of generating complementary masks for use in a dark field double dipole imaging process. The method includes the steps of identifying a target pattern having a plurality of features, including horizontal and vertical features; generating a horizontal mask based on the target pattern, where the horizontal mask includes low contrast vertical features. The generation of the horizontal mask includes the steps of optimizing the bias of the low contrast vertical features contained in the horizontal mask; and applying assist features to the horizontal mask. The method further includes generating a vertical mask based on the target pattern, where the vertical mask contains low contrast horizontal features. The generation of the vertical mask includes the steps of optimizing the bias of low contrast horizontal features contained in the vertical mask; and applying assist features to the vertical mask.
    Type: Application
    Filed: June 7, 2011
    Publication date: September 29, 2011
    Applicant: ASML Mask Tools B.V.
    Inventors: Duan-Fu Stephen Hsu, Sangbong Park, Douglas Van Den Broeke, Jang Fung Chen