Patents by Inventor Changming Li

Changming Li 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: 6986992
    Abstract: This invention relates to methods and compositions for determining single nucleotide polymorphisms (SNPs) in P450 genes. In preferred embodiments, self extension of interrogation probes is prevented by using novel non self-extension probes and/or methods, thereby improving the specificity and efficiency of P450 SNP detection in target samples with minimal false positive results. The invention thus describes a variety of methods to decrease self-extension of interrogation probes. In addition, this invention provides a unique collection of P450 SNP probes on one assay, primer sequences for specific amplification of each of the seven P450 genes and amplicon control probes to evaluate whether the intended p450 gene targets were amplified successfully. The invention also describes a variety of array platforms for performing the assays of the invention; for example: CodeLinkā„¢, eSensorā„¢, multiplex arrays with cartridges etc., all described herein.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: January 17, 2006
    Assignee: Amersham Biosciences AB
    Inventors: Buena Chui, Robert Elghanian, Vineet Gupta, Krishnamurthy Jayaraman, Gretchen Kiser, Changming Li, Chang-Gong Liu, Kenneth R. Luehrsen, Abhijit Mazumder, Ramesh Ramakrishnan, Arkadiy Silbergleyt, Todd Tuggle, Carl Yamashiro, Handy Yowanto, Ekaterina Pestova, David R. Fermin, David G. Wang, Zhijie John Gu
  • Publication number: 20050252777
    Abstract: Addressable bio/chem chips include a plurality of isolated test cells, each addressable by at least two electrodes for measuring electrical characteristics of probe/test molecule interactions. In one embodiment, electrodes are located within a channel to allow for four terminal measurement. In another embodiment, electrodes are arranged in rows and columns and interconnected with electrolyte pads used as test sites. In yet another embodiment, electrodes are arranged in cells, with each cell including a counter electrode surrounded encircled by working electrodes.
    Type: Application
    Filed: April 1, 2005
    Publication date: November 17, 2005
    Inventor: Changming Li
  • Publication number: 20050023155
    Abstract: The present invention provides an apparatus and methods for the electrical detection of molecular interactions between a probe molecule and a protein or peptide target molecule, but without requiring the use of electrochemical or other reporters to obtain measurable signals. The methods can be used for electrical detection of molecular interactions between probe molecules bound to defined regions of an array and protein or peptide target molecules which are permitted to interact with the probe molecules.
    Type: Application
    Filed: February 20, 2001
    Publication date: February 3, 2005
    Inventors: Jaymie Sawyer, Changming Li, Vi-En Choong, George Maracas, peiming Zhang
  • Patent number: 6824669
    Abstract: The present invention provides an apparatus and methods for the electrical detection of molecular interactions between a probe molecule and a protein or peptide target molecule, but without requiring the use of electrochemical or other reporters to obtain measurable signals. The methods can be used for electrical detection of molecular interactions between probe molecules bound to defined regions of an array and protein or peptide target molecules which are permitted to interact with the probe molecules.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: November 30, 2004
    Assignee: Motorola, Inc.
    Inventors: Changming Li, Jaymie Robin Sawyer, Vi-En Choong, George Maracas, Peiming Zhang
  • Publication number: 20040229222
    Abstract: This invention relates to methods and compositions for determining single nucleotide polymorphisms (SNPs) in P450 genes. In preferred embodiments, self extension of interrogation probes is prevented by using novel non self-extension probes and/or methods, thereby improving the specificity and efficiency of P450 SNP detection in target samples with minimal false positive results. The invention thus describes a variety of methods to decrease self-extension of interrogation probes. In addition, this invention provides a unique collection of P450 SNP probes on one assay, primer sequences for specific amplification of each of the seven P450 genes and amplicon control probes to evaluate whether the intended p450 gene targets were amplified successfully. The invention also describes a variety of array platforms for performing the assays of the invention; for example: CodeLink™, eSensor™, multiplex arrays with cartridges etc., all described herein.
    Type: Application
    Filed: April 1, 2002
    Publication date: November 18, 2004
    Inventors: Buena Chui, Robert Elghanian, Vineet Gupta, Krishnamurthy Jayaraman, Gretchen Kiser, Changming Li, Chang-Gong Liu, Kenneth R. Luehrsen, Abhijit Mazumder, Ramesh Ramakrishnan, Arkadiy Silbergleyt, Todd Tuggle, Carl Yamashiro, Handy Yowanto, Ekaterina Pestova, David R. Fermin, David G. Wang, Zhijie John Gu
  • Publication number: 20040014078
    Abstract: This invention is directed to novel methods of amplifying and detecting DNA. More specifically, the invention applies variations of Rolling Circle Amplification to several detection platforms.
    Type: Application
    Filed: February 6, 2003
    Publication date: January 22, 2004
    Inventors: James Xia, Charles K. Brush, Vineet Gupta, Heshu Huang, Changming Li, George Maracas, Robert Marrero, Melissa L. Ray, Lei Sun, Peiming Zhang
  • Publication number: 20030209432
    Abstract: This invention relates to the detection of molecular interactions between biological molecules. Specifically, the invention relates to electrical detection of interactions such as hybridization between nucleic acids or peptide antigen-antibody interaction using arrays of peptides or oligonucleotides. In particular, the invention relates to an apparatus and methods for detecting nucleic acid hybridization or peptide binding using electronic methods including AC impedance. In some embodiments, no electrochemical or other label moieties are used. In others, electrochemically active labels are used to detect reactions on hydrogel arrays, including genotyping reactions such as the single base extension reaction.
    Type: Application
    Filed: February 28, 2003
    Publication date: November 13, 2003
    Inventors: Vi-En Choong, Sean R. Gallagher, Mike Gaskin, Changming Li, George Maracas, Song Shi
  • Patent number: 6602400
    Abstract: The present invention provides an apparatus and methods for efficient, high-throughput electrical or electrochemical detection of biomolecules. More specifically, the invention provides an apparatus in which an independent set of electrodes is used to increase the occurrence of a desired bio-conjugation event at a test site.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: August 5, 2003
    Assignee: Motorola, Inc.
    Inventors: Vi-En Choong, Changming Li, Song Shi, George Maracas
  • Publication number: 20030138845
    Abstract: The present invention provides an apparatus and methods for the electrical detection of molecular interactions between a probe molecule and target molecule, but without requiring the use of electrochemical or other reporters to obtain measurable signals. The methods can be used for electrical detection of molecular interactions between probe molecules bound to defined regions of an array and protein or peptide target molecules which are permitted to interact with the probe molecules.peptide.
    Type: Application
    Filed: August 23, 2002
    Publication date: July 24, 2003
    Inventors: Changming Li, Jaymie Sawyer, Vi-En Choong, George Maracas, Peiming Zhang
  • Publication number: 20020090649
    Abstract: This invention relates to the detection of biomolecules. Specifically, the invention relates to electronic or electrochemical detection of biomolecules using biochip arrays. In particular, the invention provides an apparatus comprising a platform for a column-and-row addressable, high-density, enhanced-sensitivity biochip array, and methods of use thereof. The devices and methods of the invention can be used to detect molecular interactions such as nucleic acid hybridization or protein binding.
    Type: Application
    Filed: August 31, 2001
    Publication date: July 11, 2002
    Inventors: Tony Chan, Vi-En Choong, Changming Li, George Nicolas Maracas, Larry Akio Nagahara, Song Shi
  • Publication number: 20020051975
    Abstract: The present invention provides an apparatus and methods for detecting cation interactions associated with molecular interactions using AC impedance, but without the use of electrochemical or other reporters to obtain measurable signals. The methods can be used for electrical detection of molecular interactions between probe molecules bound to defined regions of an array and target molecules which are permitted to interact with the probe molecules.
    Type: Application
    Filed: December 9, 1999
    Publication date: May 2, 2002
    Inventors: CHANGMING LI, SONG SHI, GEORGE MARACAS, VI-EN CHOONG
  • Patent number: 6365415
    Abstract: The present invention provides a method to characterize, optimize, and control the quality and production of hydrogel media. Additionally, the present invention provides a method for determining the size, size distribution, and spatial distribution of the pores of a porous substrate. More particularly, the invention provides a method for determining the size, size distribution, and spatial distribution of the pores of a polymeric hydrogel-based substrate.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: April 2, 2002
    Assignee: Motorola Inc.
    Inventors: Changming Li, Song Shi, George Maracas, Vi-En Choong
  • Patent number: 6136469
    Abstract: An electrolyte for an electrochemical cell is described comprising two or more polyanion-based compounds of the general formula:M.sub.m [X.sub.x Y.sub.y O.sub.z ].nH.sub.2 OwhereM is selected from the group consisting of ammonia and the elements of Groups IA and IIA of the Periodic Table;X and Y are different and are selected from the group consisting of the elements of Groups IIIB, IVB, VB, and VIB of the Periodic Table, and boron, aluminum, gallium, silicon, germanium, tin, phosphorous, arsenic, antimony, bismuth, selenium, tellurium, polonium, indium, and astatine;O is oxygen; andm is an integer from 1 to 10, inclusive;x is an integer from 0 to 1, inclusive;y is an integer from 2 to 13, inclusive;z is an integer from 7 to 80, inclusive; andn is an integer from 2 to 100, inclusive.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: October 24, 2000
    Assignee: Motorola, Inc.
    Inventor: Changming Li
  • Patent number: 6130004
    Abstract: A material for use as an electrode, and particularly the anode (20) of an electrochemical device, such as an electrochemical capacitor device (10). The material is a multicomponent alloy material, including a host matrix material consisting of antimony, and at least one modifier element selected from the group consisting of bismuth, nickel, cadmium, zinc, silver, manganese, lead, lithium, and combinations thereof.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: October 10, 2000
    Assignee: Motorola, Inc.
    Inventors: Changming Li, Joseph G. Kincs, Lijun Bai
  • Patent number: 6088217
    Abstract: A hybrid capacitor with improved energy density employs a cathode including an organic material and optionally a gel, solid, or composite electrolyte material. However, like conventional electrolytic capacitors, said hybrid capacitor employs a valve metal and its respective oxide dielectric layer on the anode side of the cell.
    Type: Grant
    Filed: May 31, 1998
    Date of Patent: July 11, 2000
    Assignee: Motorola, Inc.
    Inventors: Hitendra K. Patel, Changming Li
  • Patent number: 5986878
    Abstract: A capacitor (100) includes first and second electrodes (102, 103) that each have an electroactive material (115, 120) disposed on a metallic substrate (105, 110). A solid electrolyte (125) including a polyacid is positioned between the first and second electrodes (102, 103). Polyacids are relatively low in cost, and their high ionic conductivity together with their thermal stability makes polyacids a viable alternative to solid polymer electrolytes.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: November 16, 1999
    Assignee: Motorola, Inc.
    Inventors: Changming Li, Robert H. Reuss
  • Patent number: 5961810
    Abstract: A method for making high power electrochemical charge storage devices, provides for depositing an electrically conducting polymer (16), (18), onto a non-noble metal substrate (10), which has been prepared by treatment with a surfactant. Using this method, high power, high energy electrochemical charge storage devices may be fabricated with highly reproducible low cost.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: October 5, 1999
    Assignee: Motorola, Inc
    Inventors: Changming Li, Ke Keryn Lian, Han Wu
  • Patent number: 5872698
    Abstract: An electrochemical cell, particularly an electrochemical capacitor device (30) includes first and second electrodes (24) and (28) having an electrolyte (26) disposed therebetween. At least one of the electrodes (24) is fabricated on a substrate (12) and includes a multilayer composite electrode active material disposed thereon. The multilayer composite electrode includes first and second layer (16) and (22), in which the ratios of electroactive materials therein is varied so as to promote good adherence to the electrode substrate as well as excellent electrochemical performance.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: February 16, 1999
    Inventors: Lijun Bai, Joseph G. Kincs, Changming Li
  • Patent number: 5847920
    Abstract: A capacitor (100) includes first and second electrodes (102, 103) an adhesive electrolyte (125) positioned therebetween. The adhesive electrolyte (125) includes an organic polymer and an inorganic component, which is either a polyacid or a polysalt.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: December 8, 1998
    Assignee: Motorola, Inc.
    Inventors: Changming Li, Robert H. Reuss, Marc Chason
  • Patent number: 5830601
    Abstract: An electrochemical battery cell (10) including a zinc electrode (20), and may be fabricated with an electrolyte (50) system including an electrolyte active species and a modifier. The electrolyte active species is typically a metal hydroxide such as KOH or NaOH, while the modifier may be a porphine such as a metal porphine, and/or a polymeric material. The polymeric material may be, for example, a polyvinyl resin such as polyvinyl alcohol or polyvinyl acetate. The resulting electrolyte typically includes between 3 and 10 weight percent of the polyvinyl resin, 5 and 50 weight percent of the metal hydroxide, and between 1 PPM and 1 wt % of the modifier. Employing such an electrolyte in a cell including a zinc electrode results in an energy storage device having improved power density and substantially longer cycle life.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: November 3, 1998
    Assignee: Motorola, Inc.
    Inventors: Ke Keryn Lian, Han Wu, Changming Li