Patents by Inventor Alex Ma

Alex Ma 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: 11301510
    Abstract: In an example embodiment, a selection of an image in a user interface is received. Then information about the image is received. Then a look is identified for the image, wherein the look is a category for the image based at least in part on one or more visual attributes of the image as shown in the image The identified look is then compared with one or more item listings stored in a database to identify one or more matching item listings, the one or more matching item listings containing associated images that correspond to the look. Finally, the one or more matching item listings are displayed in the user interface.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: April 12, 2022
    Assignee: eBay Inc.
    Inventors: Emily Zhang, Roy Leon Camp, Chenhao Alex Ma
  • Publication number: 20190138547
    Abstract: In an example embodiment, a selection of an image in a user interface is received. Then information about the image is received. Then a look is identified for the image, wherein the look is a category for the image based at least in part on one or more visual attributes of the image as shown in the image The identified look is then compared with one or more item listings stored in a database to identify one or more matching item listings, the one or more matching item listings containing associated images that correspond to the look. Finally, the one or more matching item listings are displayed in the user interface.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Inventors: Emily Zhang, Roy Leon Camp, Chenhao Alex Ma
  • Patent number: 10235388
    Abstract: In an example embodiment, a selection of an image in a user interface is received. Then information about the image is received. Then a look is identified for the image, wherein the look is a category for the image based at least in part on one or more visual attributes of the image as shown in the image The identified look is then compared with one or more item listings stored in a database to identify one or more matching item listings, the one or more matching item listings containing associated images that correspond to the look. Finally, the one or more matching item listings are displayed in the user interface.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: March 19, 2019
    Assignee: eBay Inc.
    Inventors: Emily Zhang, Roy Leon Camp, Chenhao Alex Ma
  • Patent number: 9890111
    Abstract: The crystal structure at 2.16 ? resolution of the full-length bacterial bifunctional transglycosylase penicillin-binding protein 1b (PBP1b) from Escherichia coli, in complex with its inhibitor moenomycin, is provided. The atomic coordinates of the complex as well as the moenomycin binding site are provided. Three dimensional structures of amino acid residues involved in moenomycin binding and transglycosylation activity are identified. Binding site for peptidoglycan synthesis inhibitors comprising inhibitor-binding site comprises amino acid residues from at least one of transglycosylase (TG), UvrB domain 2 homolog (UB2H) and transmembrane (TM) domains of PBP1b are identified at an atomic level of resolution. Methods for rational drug design based on the atomic coordinates are provided. Methods for screening for antibiotics based on anisotropic binding assay and transglycosylase inhibitor assays are provided. Novel antibiotics based on the screening assays of the invention are disclosed.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: February 13, 2018
    Assignee: Academia Sinica
    Inventors: Chi-Huey Wong, Che Alex Ma, Ting-Jen Rachel Cheng, Wei-Chieh Cheng
  • Publication number: 20170250287
    Abstract: A Schottky source-gated thin film transistor is provided including: a drain contact; an insulating substrate; a source contact made of a Schottky metal; a channel connecting the buried source contact to the drain, the channel made of ZnO; and a Schottky source barrier formed between the source contact and the channel; and a gate; wherein the source contact is positioned below the channel.
    Type: Application
    Filed: May 16, 2017
    Publication date: August 31, 2017
    Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Douglas Barlage, Alex Ma, Manisha Gupta, Kyle Bothe, Kenneth Cadien, Amir Afshar
  • Publication number: 20160315196
    Abstract: A Schottky source-gated thin film transistor is provided including: a drain contact; an insulating substrate; a source contact made of a Schottky metal; a channel connecting the buried source contact to the drain, the channel made of ZnO; and a Schottky source barrier formed between the source contact and the channel; and a gate; wherein the source contact is positioned below the channel.
    Type: Application
    Filed: December 4, 2014
    Publication date: October 27, 2016
    Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Douglas Barlage, Alex Ma, Manisha Gupta, Kyle Bothe, Kenneth Cadien, Amir Afshar
  • Publication number: 20160083337
    Abstract: The crystal structure at 2.16 ? resolution of the full-length bacterial bifunctional transglycosylase penicillin-binding protein 1b (PBP1b) from Escherichia coli, in complex with its inhibitor moenomycin, is provided. The atomic coordinates of the complex as well as the moenomycin binding site are provided. Three dimensional structures of amino acid residues involved in moenomycin binding and transglycosylation activity are identified. Binding site for peptidoglycan synthesis inhibitors comprising inhibitor-binding site comprises amino acid residues from at least one of transglycosylase (TG), UvrB domain 2 homolog (UB2H) and transmembrane (TM) domains of PBP1b are identified at an atomic level of resolution. Methods for rational drug design based on the atomic coordinates are provided. Methods for screening for antibiotics based on anisotropic binding assay and transglycosylase inhibitor assays are provided. Novel antibiotics based on the screening assays of the invention are disclosed.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 24, 2016
    Applicant: Academia Sinica
    Inventors: Chi-Huey Wong, Che Alex Ma, Ting-Jen Rachel Cheng, Wei-Chieh Cheng
  • Publication number: 20150379045
    Abstract: In an example embodiment, a selection of an image in a user interface is received. Then information about the image is received. Then a look is identified for the image, wherein the look is a category for the image based at least in part on one or more visual attributes of the image as shown in the image The identified look is then compared with one or more item listings stored in a database to identify one or more matching item listings, the one or more matching item listings containing associated images that correspond to the look. Finally, the one or more matching item listings are displayed in the user interface.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 31, 2015
    Inventors: Emily Zhang, Roy Leon Camp, Chenhao Alex Ma
  • Publication number: 20150342973
    Abstract: Moenomycin inhibits bacterial growth by clocking the transglycosylase activity of class A penicillin-binding proteins (PBPs), which are key enzymes in bacterial cell wall synthesis. The binding affinities of moenomycin A with various truncated PBPs were compared showing that the transmembrane domain is important for moenomycin binding. Full-length class-A PBPs from 16 bacterial species were produced, and their binding activities showed a correlation with the antimicrobial activity of moenomycin against Enterococcus faecalis and Staphylococcus aureus. Moreover, a fluorescence anisotropy-based high-throughput assay was developed and used successfully for identification of transglycosylase inhibitors.
    Type: Application
    Filed: December 21, 2014
    Publication date: December 3, 2015
    Applicant: ACADEMIA SINICA
    Inventors: Chi-Huey WONG, Ting-Jen CHENG, Che Alex MA, Wei-Chieh CHENG
  • Publication number: 20150232417
    Abstract: Crystal structure at 2.16 ? resolution of full-length Escherichia coli penicillin-binding protein 1b (PBP1b) in complex with its inhibitor moenomycin, is provided. 3D structures of amino acid residues involved in moenomycin binding and transglycosylation activity are identified. Binding sites for peptidoglycan synthesis inhibitors comprising amino acid residues from transglycosylase (TG), UvrB domain 2 homolog (UB2H) and transmembrane (TM) domains of PBP1b are identified at atomic level resolution. Rational drug design, based on the atomic coordinates, are disclosed. Methods for screening for antibiotics using anisotropic binding and transglycosylase inhibitor assays and novel antibiotics based on the screening assays are provided.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 20, 2015
    Applicant: ACADEMIA SINICA
    Inventors: Chi-Huey WONG, Che Alex MA, Ting-Jen Rachel CHENG, Wei-Chieh CHENG
  • Patent number: 8916540
    Abstract: Moenomycin inhibits bacterial growth by clocking the transglycosylase activity of class A penicillin-binding proteins (PBPs), which are key enzymes in bacterial cell wall synthesis. The binding affinities of moenomycin A with various truncated PBPs were compared showing that the transmembrane domain is important for moenomycin binding. Full-length class-A PBPs from 16 bacterial species were produced, and their binding activities showed a correlation with the antimicrobial activity of moenomycin against Enterococcus faecalis and Staphylococcus aureus. Moreover, a fluorescence anisotropy-based high-throughput assay was developed and used successfully for identification of transglycosylase inhibitors.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: December 23, 2014
    Assignee: Academia Sinica
    Inventors: Chi-Huey Wong, Ting-Jen Cheng, Che Alex Ma, Wei-Chieh Cheng
  • Publication number: 20100121107
    Abstract: The crystal structure at 2.16 ? resolution of the full-length bacterial bifunctional transglycosylase penicillin-binding protein 1b (PBP1b) from Escherichia coli, in complex with its inhibitor moenomycin, is provided. The atomic coordinates of the complex as well as the moenomycin binding site are provided. Three dimensional structures of amino acid residues involved in moenomycin binding and transglycosylation activity are identified. Binding site for peptidoglycan synthesis inhibitors comprising inhibitor-binding site comprises amino acid residues from at least one of transglycosylase (TG), UvrB domain 2 homolog (UB2H) and transmembrane (TM) domains of PBP1b are identified at an atomic level of resolution. Methods for rational drug design based on the atomic coordinates are provided. Methods for screening for antibiotics based on anisotropic binding assay and transglycosylase inhibitor assays are provided. Novel antibiotics based on the screening assays of the invention are disclosed.
    Type: Application
    Filed: July 21, 2009
    Publication date: May 13, 2010
    Inventors: Chi-Huey Wong, Che Alex Ma, Ting-Jen Rachel Cheng, Wei-Chieh Cheng
  • Publication number: 20090203641
    Abstract: Moenomycin inhibits bacterial growth by clocking the transglycosylase activity of class A penicillin-binding proteins (PBPs), which are key enzymes in bacterial cell wall synthesis. The binding affinities of moenomycin A with various truncated PBPs were compared showing that the transmembrane domain is important for moenomycin binding. Full-length class-A PBPs from 16 bacterial species were produced, and their binding activities showed a correlation with the antimicrobial activity of moenomycin against Enterococcus faecalis and Staphylococcus aureus. Moreover, a fluorescence anisotropy-based high-throughput assay was developed and used successfully for identification of transglycosylase inhibitors.
    Type: Application
    Filed: January 15, 2009
    Publication date: August 13, 2009
    Inventors: Chi-Huey Wong, Ting-Jen Cheng, Che Alex Ma, Wei-Chieh Cheng