Patents by Inventor Peter Liu

Peter Liu 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: 20140220553
    Abstract: This invention relates to enzymatic removal of type A and B antigens from blood group A, B, and AB reactive cells in blood products, and thereby converting these to non-A and non-B reactive cells. The invention further relates to using unique ?-N-acetylgalactosaminidases and ?-galactosidases with superior kinetic properties for removing the immunodominant monosaccharides of the blood group A and B antigens and improved performance in enzymatic conversion of red blood cells. The preferred unique ?-N-acetylgalactosaminidases and ?-galactosidases exhibit the following characteristics: (i) exclusive, preferred or no less than 10% substrate specificity for the type A and B branched polysaccharide structures relative to measurable activity with simple mono- and disaccharide structures and aglycon derivatives hereof: (ii) optimal performance at neutral pH with blood group oligosaccharides and in enzymatic conversion of cells: and (iii) a favorable kinetic constant Km with mono- and oligosaccharide substrates.
    Type: Application
    Filed: March 7, 2014
    Publication date: August 7, 2014
    Applicant: Velico Medical, Inc.
    Inventors: Henrik Clausen, Humberto de la Vega, Cheryl Hill, Qiyong Peter Liu
  • Publication number: 20140193845
    Abstract: Disclosed is a method for assessing heart failure in vitro including the steps of measuring in a sample the concentration of the marker SFRP-3, of optionally measuring in the sample the concentration of one or more other marker(s) of heart failure, and of assessing heart failure by comparing the concentration determined in for SFRP-3 and the concentration(s) determined for the optionally one or more other marker to the concentration of this marker or these markers as established in a reference population. Also disclosed are the use of SFRP-3 as a marker protein in the assessment of heart failure, a marker combination comprising SFRP-3 and a kit for measuring SFRP-3.
    Type: Application
    Filed: February 14, 2014
    Publication date: July 10, 2014
    Applicants: The Governing Council of the University of Toronto, Roche Diagnostics Operations, Inc.
    Inventors: Ursula-Henrike Wienhues-Thelen, Sara Arab, Dirk Block, Andrew Emili, Anthony Gramolini, Georg Hess, Hendrik Huedig, Peter Liu, David MacLennan
  • Patent number: 8697411
    Abstract: This invention relates to enzymatic removal of type A and B antigens from blood group A, B, and AB reactive cells in blood products, and thereby converting these to non-A and non-B reactive cells. The invention further relates to using unique ?-N-acetylgalactosaminidases and ?-galactosidases with superior kinetic properties for removing the immunodominant monosaccharides of the blood group A and B antigens and improved performance in enzymatic conversion of red blood cells. The preferred unique ?-N-acetylgalactosaminidases and ?-galactosidases exhibit the following characteristics: (i) exclusive, preferred or no less than 10% substrate specificity for the type A and B branched polysaccharide structures relative to measurable activity with simple mono- and disaccharide structures and aglycon derivatives hereof; (ii) optimal performance at neutral pH with blood group oligosaccharides and in enzymatic conversion of cells; and (iii) a favorable kinetic constant Km with mono- and oligosaccharide substrates.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: April 15, 2014
    Assignee: Velico Medical, Inc.
    Inventors: Henrik Clausen, Humberto de la Vega, Cheryl Hill, Qiyong Peter Liu
  • Publication number: 20140099629
    Abstract: The present invention relates to a platelet additive solution (PAS) having an amount of one or more ?-galactosidase inhibitors with or without an amount of one or more sialidase inhibitors, and optionally one or more glycan-modifying agents; and one or more of PAS components that include a salt, a citrate source, a carbon source, or any combination thereof.
    Type: Application
    Filed: October 7, 2013
    Publication date: April 10, 2014
    Applicants: The Brigham and Women's Hospital, Inc., Velico Medical, Inc.
    Inventors: Qiyong Peter Liu, Karin Hoffmeister, Robert Sackstein
  • Patent number: 8691587
    Abstract: Disclosed is a method for assessing heart failure in vitro including the steps of measuring in a sample the concentration of the marker SFRP-3, of optionally measuring in the sample the concentration of one or more other marker(s) of heart failure, and of assessing heart failure by comparing the concentration determined in for SFRP-3 and the concentration(s) determined for the optionally one or more other marker to the concentration of this marker or these markers as established in a reference population. Also disclosed are the use of SFRP-3 as a marker protein in the assessment of heart failure, a marker combination comprising SFRP-3 and a kit for measuring SFRP-3.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: April 8, 2014
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Ursula-Henrike Wienhues-Thelen, Sara Arab, Dirk Block, Andrew Emili, Anthony Gramolini, Georg Hess, Hendrik Heudig, Peter Liu, David MacLennan
  • Patent number: 8611368
    Abstract: Disclosed is an apparatus which operates to substantially evenly distribute commands and/or data packets issued from a managed program or other entity over a given time period. The even distribution of these commands or data packets minimizes congestion in critical resources such as memory, I/O devices and/or the bus for transferring the data between source and destination. Any unmanaged commands or data packets are treated as in conventional technology.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: December 17, 2013
    Assignees: International Business Machines Corporation, Kabushiki Kaisha Toshiba
    Inventors: Shigehiro Asano, Charles Ray Johns, Matthew Edward King, Peichun Peter Liu, David Mui, Jieming Qi
  • Patent number: 8483227
    Abstract: Disclosed is an apparatus which operates to substantially evenly distribute commands and/or data packets issued from a managed program or other entity over a given time period. The even distribution of these commands or data packets minimizes congestion in critical resources such as memory, I/O devices and/or the bus for transferring the data between source and destination. Any unmanaged commands or data packets are treated as in conventional technology.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: July 9, 2013
    Assignees: International Business Machines Corporation, Kabushiki Kaisha Toshiba
    Inventors: Shigehiro Asano, Charles Ray Johns, Matthew Edward King, Peichun Peter Liu, David Mui, Jieming Qi
  • Patent number: 8396620
    Abstract: The present invention relates to a patrol device and a patrol path planning method. The patrol device includes an operating unit configured to establish a plurality of patrol paths, each of which has an Average Patrol Omission (APO) value and an Average Patrol Quality (APQ) value, and to determine an optimum patrol path from the plurality of patrol paths according to the APO value and the APQ value; and a moving unit configured to move along the optimum patrol path. The method includes providing a plurality of patrol paths, each of which has an Average Patrol Omission (APO) value and an Average Patrol Quality (APQ) value; and evaluating the plurality of patrol paths according to the respective APO values and the respective APQ values so as to select an optimum patrol path therefrom.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: March 12, 2013
    Assignee: National Taiwan University
    Inventors: Wei-Han Hung, Shih-Chung Kang, Peter Liu
  • Patent number: 8346425
    Abstract: A modular surface inspecting device is provided. A modular surface inspecting device comprises a computing layer having a processing unit in which a modular service-oriented software is installed; a detecting layer having a plurality of sensors obtaining a plurality of surrounding information; and a dynamic layer carrying the computing layer and the detecting layer and controlled by a controlling command generated by the computing layer according to the plurality of surrounding information.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: January 1, 2013
    Assignee: National Taiwan University
    Inventors: Kai-Yuan Ku, Shih-Chung Kang, Shang-Hsien Hsieh, Jia-Ruey Chang, Peter Liu
  • Publication number: 20120321601
    Abstract: The present invention relates to methods, compositions and kits for increasing the in vivo circulation time of isolated platelets by storing the platelets with one or more sialidase inhibitors.
    Type: Application
    Filed: May 17, 2012
    Publication date: December 20, 2012
    Inventors: Qiyong Peter Liu, Karin Hoffmeister, Robert Sackstein
  • Publication number: 20120321722
    Abstract: The present invention relates to methods and compositions for reducing sialidase activity and inhibiting bacterial proliferation of one or more bacteria in a platelet product preparation from one or more donors. In general, the method includes contacting the platelet product preparation with an amount of a sialidase inhibitor, to thereby obtain a sialidase inhibitor-treated platelet product preparation. Sialidase activity is reduced and the proliferation of one or more bacteria is inhibited, as compared to a platelet product preparation not subjected to the sialidase inhibitor treatment.
    Type: Application
    Filed: May 17, 2012
    Publication date: December 20, 2012
    Inventors: Qiyong Peter Liu, Karin Hoffmeister
  • Publication number: 20120294842
    Abstract: The present invention relates to a platelet additive solution (PAS) having an amount of one or more sialidase inhibitors and optionally one or more glycan-modifying agents; and one or more of PAS components that includes a salt, a citrate source, a carbon source, and any combination thereof.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 22, 2012
    Inventors: Qiyong Peter Liu, Karin Hoffmeister
  • Publication number: 20120202273
    Abstract: This invention relates to enzymatic removal of type A and B antigens from blood group A, B, and AB reactive cells in blood products, and thereby converting these to non-A and non-B reactive cells. The invention further relates to using unique ?-N-acetylgalactosaminidases and ?-galactosidases with superior kinetic properties for removing the immunodominant monosaccharides of the blood group A and B antigens and improved performance in enzymatic conversion of red blood cells. The preferred unique ?-N-acetylgalactosaminidases and ?-galactosidases exhibit the following characteristics: (i) exclusive, preferred or no less than 10% substrate specificity for the type A and B branched polysaccharide structures relative to measurable activity with simple mono- and disaccharide structures and aglycon derivatives hereof; (ii) optimal performance at neutral pH with blood group oligosaccharides and in enzymatic conversion of cells; and (iii) a favorable kinetic constant Km with mono- and oligosaccharide substrates.
    Type: Application
    Filed: August 8, 2011
    Publication date: August 9, 2012
    Inventors: Henrik Clausen, Humberto de la Vega, Chery Hill, Qiyong Peter Liu
  • Publication number: 20120156703
    Abstract: The disclosure relates to assessing heart failure in vitro by measuring the concentration of the marker mimecan in a sample, and optionally measuring in the sample the concentration of one or more other marker(s) of heart failure, and of assessing heart failure by comparing the concentration of mimecan and the one or more other marker(s) to reference concentrations of this (or these) marker(s) as established in a reference population. The one or more markers may be selected from the group comprising a natriuretic peptide marker, a cardiac troponin marker, and a marker of inflammation. Also disclosed are the use of mimecan as a marker protein in the assessment of heart failure, a marker combination comprising mimecan, and a kit for measuring mimecan.
    Type: Application
    Filed: January 26, 2012
    Publication date: June 21, 2012
    Applicants: THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO, ROCHE DIAGNOSTICS OPERATIONS, INC.
    Inventors: Dirk Block, Sara Arab, Georg Hess, Hendrik Huedig, Peter Liu, Ursula-Henrike Wienhues-Thelen
  • Publication number: 20110246695
    Abstract: Disclosed is an apparatus which operates to substantially evenly distribute commands and/or data packets issued from a managed program or other entity over a given time period. The even distribution of these commands or data packets minimizes congestion in critical resources such as memory, I/O devices and/or the bus for transferring the data between source and destination. Any unmanaged commands or data packets are treated as in conventional technology.
    Type: Application
    Filed: June 17, 2011
    Publication date: October 6, 2011
    Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC., KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigehiro Asano, Charles Ray Johns, Matthew Edward King, Peichun Peter Liu, David Mui, Jieming Qi
  • Patent number: 7993896
    Abstract: This invention relates to enzymatic removal of type A and B antigens from blood group A, B, and AB reactive cells in blood products, and thereby converting these to non-A and non-B reactive cells. The invention further relates to using unique ?-N-acetylgalactosaminidases and ?-galactosidases with superior kinetic properties for removing the immunodominant monosaccharides of the blood group A and B antigens and improved performance in enzymatic conversion of red blood cells. The preferred unique ?-N-acetylgalactosaminidases and ?-galactosidases exhibit the following characteristics: (i) exclusive, preferred or no less than 10% substrate specificity for the type A and B branched polysaccharide structures relative to measurable activity with simple mono- and disaccharide structures and aglycon derivatives hereof; (ii) optimal performance at neutral pH with blood group oligosaccharides and in enzymatic conversion of cells; and (iii) a favorable kinetic constant Km with mono- and oligosaccharide substrates.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: August 9, 2011
    Assignee: Velico Medical, Inc.
    Inventors: Henrik Clausen, Humberto de la Vega, Cheryl Hill, Qiyong Peter Liu
  • Publication number: 20110165591
    Abstract: The invention relates to a method for assessing heart failure in vitro and involves the steps of measuring in a sample the concentration of the marker biglycan, of optionally measuring in the sample the concentration of one or more other marker(s) of heart failure, and of assessing heart failure by comparing the concentration determined in for biglycan and the concentration(s) determined for the optionally one or more other marker to the concentration of this marker or these markers as established in a reference population. Also disclosed are the use of biglycan as a marker protein in the assessment of heart failure, a marker combination comprising biglycan and a kit for measuring biglycan.
    Type: Application
    Filed: March 15, 2011
    Publication date: July 7, 2011
    Inventors: Ursula-Henrike Wienhues-Thelen, Sara Arab, Dirk Block, Andrew Emili, Anthony Gramolini, Georg Hess, Hendrik Huedig, Peter Liu, David MacLennan
  • Patent number: 7951552
    Abstract: This invention relates to novel ?-galactosidases for the enzymatic removal of the immunodominant monosaccharides on blood products and tissues. Specifically this invention provides a novel family of ?3 glycosidases, used for the enzymatic removal of type B antigens from blood group B and AB reactive blood products, and the GaIiIi antigen from non-human animal tissues, thereby converting these to non-immunogenic cells and tissues suitable for transplantation.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: May 31, 2011
    Assignee: Velico Medical, Inc.
    Inventors: Qiyong Peter Liu, Henrik Clausen
  • Publication number: 20110045569
    Abstract: This invention relates to enzymatic removal of type A and B antigens from blood group A, B, and AB reactive cells in blood products, and thereby converting these to non-A and non-B reactive cells. The invention further relates to using unique ?-N-acetylgalactosaminidases and ?-galactosidases with superior kinetic properties for removing the immunodominant monosaccharides of the blood group A and B antigens and improved performance in enzymatic conversion of red blood cells. The preferred unique ?-N-acetylgalactosaminidases and ?-galactosidases exhibit the following characteristics: (i) exclusive, preferred or no less than 10% substrate specificity for the type A and B branched polysaccharide structures relative to measurable activity with simple mono- and disaccharide structures and aglycon derivatives hereof; (ii) optimal performance at neutral pH with blood group oligosaccharides and in enzymatic conversion of cells; and (iii) a favorable kinetic constant Km with mono- and oligosaccharide substrates.
    Type: Application
    Filed: May 28, 2010
    Publication date: February 24, 2011
    Inventors: Henrik Clausen, Humberto De La Vega, Cheryl Hill, Qiyong Peter Liu
  • Publication number: 20110027819
    Abstract: Disclosed is a method for assessing heart failure in vitro including the steps of measuring in a sample the concentration of the marker SFRP-3, of optionally measuring in the sample the concentration of one or more other marker(s) of heart failure, and of assessing heart failure by comparing the concentration determined in for SFRP-3 and the concentration(s) determined for the optionally one or more other marker to the concentration of this marker or these markers as established in a reference population. Also disclosed are the use of SFRP-3 as a marker protein in the assessment of heart failure, a marker combination comprising SFRP-3 and a kit for measuring SFRP-3.
    Type: Application
    Filed: October 11, 2010
    Publication date: February 3, 2011
    Inventors: Ursula-Henrike Wienhues-Thelen, Sara Arab, Dirk Block, Andrew Emili, Anthony Gramolini, Georg Hess, Hendrik Heudig, Peter Liu, David MacLennan