Patents by Inventor George Walker

George Walker 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: 20080048691
    Abstract: The present invention is directed to a high density test probe which provides a means for testing a high density and high performance integrated circuits in wafer form or as discrete chips. The test probe is formed from a dense array of elongated electrical conductors which are embedded in an compliant or high modulus elastomeric material. A standard packaging substrate, such as a ceramic integrated circuit chip packaging substrate is used to provide a space transformer Wires are bonded to an array of contact pads on the surface of the space transformer. The space transformer formed from a multilayer integrated circuit chip packaging substrate. The wires are as dense as the contact location array. A mold is disposed surrounding the array of outwardly projecting wires. A liquid elastomer is disposed in the mold to fill the spaces between the wires.
    Type: Application
    Filed: October 30, 2007
    Publication date: February 28, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Brian Beaman, Keith Fogel, Paul Lauro, Maurice Norcott, Da-Yuan Shih, George Walker
  • Publication number: 20070271781
    Abstract: The present invention is directed to a high density test probe which provides a means for testing a high density and high performance integrated circuits in wafer form or as discrete chips. The test probe is formed from a dense array of elongated electrical conductors which are embedded in an compliant or high modulus elastomeric material. A standard packaging substrate, such as a ceramic integrated circuit chip packaging substrate is used to provide a space transformer. Wires are bonded to an array of contact pads on the surface of the space transformer. The space transformer formed from a multilayer integrated circuit chip packaging substrate. The wires are as dense as the contact location array. A mold is disposed surrounding the array of outwardly projecting wires. A liquid elastomer is disposed ion the mold to fill the spaces between the wires.
    Type: Application
    Filed: August 3, 2001
    Publication date: November 29, 2007
    Inventors: Brian Beaman, Keith Fogel, Paul Lauro, Maurice Norcott, Da-Yuan Shih, George Walker
  • Publication number: 20070257689
    Abstract: A method to fabricate a high density, minimal pitch, thermally matched contactor assembly to maintain electrical contact with contact regions on fully processed semiconductors, preferably while still in wafer form, and throughout a range of temperatures. A guide plate and a contactor assembly for such use, comprising a substrate formed of a material having a coefficient of thermal expansion approximately equal to that of the device; and at least one hole in the guide plate for receiving an electrical contact (probe element) for contacting at least one respective region on said surface, said at least one hole being sized and shaped so as to accept said electrical contact, while allowing said electrical contact (probe element) to move with respect to said hole in said guide plate. The material can be one of silicon, borosilicate glass and cordierite.
    Type: Application
    Filed: May 5, 2006
    Publication date: November 8, 2007
    Inventors: Timothy Dalton, Simon Karecki, Anna Karecki, Samuel Mcknight, George Walker
  • Publication number: 20070202536
    Abstract: The present invention includes methods of enriching rare cells, such as cancer cells, from biological samples, such as blood samples. The methods include performing at least one debulking step on a blood sample and selectively removing at least one type undesirable component from the blood sample to obtain a blood sample that is enriched in a rare cell of interest. In some embodiments magnetic beads coupled to specific binding members are used to selectively removed components.
    Type: Application
    Filed: August 2, 2006
    Publication date: August 30, 2007
    Inventors: Douglas Yamanishi, Paul Hujsak, Sara Snyder, George Walker, Junquan Xu, Mingxian Huang, Guoliang Tao, Lei Wu, Xiaobo Wang, Joe Ouyang, Charina Schmitigal, Samantha O'Neill, Jing Cheng, Jia Xu
  • Publication number: 20070166777
    Abstract: This invention relates to methods for determining the activity of Lp-PLA2 in at least one sample from an animal. The invention also relates to methods for determining the inhibition of Lp-PLA2 activity in samples from animals that are administered an Lp-PLA2 inhibitor.
    Type: Application
    Filed: April 14, 2005
    Publication date: July 19, 2007
    Inventors: Yaping Shou, Yin-Fai Siu, George Walker
  • Publication number: 20070065892
    Abstract: This invention relates to a method for determining the activity of Lp-PLA2 in a plurality of samples from animals. The invention also relates to a kit for determining Lp-PLA2 activity in a plurality of samples.
    Type: Application
    Filed: May 27, 2004
    Publication date: March 22, 2007
    Inventors: Yun-Fu Hu, George Walker
  • Publication number: 20070059951
    Abstract: A three-dimensional package consisting of a plurality of folded integrated circuit chips (100, 110, 120) is described wherein at least one chip provides interconnect pathways for electrical connection to additional chips of the stack, and at least one chip (130) is provided with additional interconnect wiring to a substrate (500), package or printed circuit board. Further described, is a method of providing a flexible arrangement of interconnected chips that are folded over into a three-dimensional arrangements to consume less aerial space when mounted on a substrate, second-level package or printed circuit board.
    Type: Application
    Filed: September 30, 2003
    Publication date: March 15, 2007
    Inventors: Richard Volant, Kevin Petrarca, George Walker
  • Patent number: 7166443
    Abstract: The present invention recognizes that diagnosis and prognosis of many conditions can depend on the enrichment of rare cells from a complex fluid sample. In particular, the enrichment of fetal cells from maternal samples, such as maternal blood samples, can greatly aid in the detection of fetal abnormalities or a variety of genetic conditions. In addition, the present invention recognizes that the enrichment of rare malignant cells from patient samples, can aid in diagnosis, prognosis, and development of therapeutic modalities for patients. The invention includes microfabricated filters for filtering fluid samples and methods of enriching rare cells of fluid samples using microfabricated filters of the present invention. The invention also includes solutions for the selective sedimentation of red blood cells (RBCs) from a blood sample and methods of using selective RBC sedimentation solutions for enriching rare cells of a fluid sample.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: January 23, 2007
    Assignee: Aviva Biosciences Corporation
    Inventors: George Walker, Junquan Xu, Douglas Yamanishi, Paul Hujsak, Lei Wu, Mingxian Huang, Guoliang Tao, Sara Snyder, Charina Yap
  • Publication number: 20060252054
    Abstract: The present invention recognizes that diagnosis and prognosis of many conditions can depend on the enrichment of rare cells, especially tumor cells, from a complex fluid sample such as a blood sample. In particular, the present invention is directed to methods and compositions for detecting a non-hematopoietic cell, e.g., a non-hematopoietic tumor cell, in a blood sample via, inter alia, removing red blood cells (RBCs) from a blood sample using a non-centrifugation procedure, removing white blood cells (WBCs) from said blood sample to enrich a non-hematopoietic cell, if any, from said blood sample; and assessing the presence, absence and/or amount of said enriched non-hematopoietic cell.
    Type: Application
    Filed: October 31, 2005
    Publication date: November 9, 2006
    Inventors: Ping Lin, Douglas Yamanishi, Paul Hujsak, Sara Snyder, George Walker, Junguan Xu, Mingxian Huang, Guoliang Tao, Lei Wu, Xiaobo Wang, Joe Ouyang, Charina Schmitigal, Samantha O'Neill, Jing Cheng, Elizabeth Voung, Jia Xu
  • Publication number: 20060124927
    Abstract: Methods of forming a conductive structure on a substrate prior to packaging, and a test probe structure generated according to the method, are disclosed. The conductive structure includes a high aspect ratio structure formed by injected molded solder. The invention can be applied to form passive elements and interconnects on a conventional semiconductor substrate after the typical BEOL, and prior to packaging. The method may provide better electromigration characteristics, lower resistivity, and higher Q factors for conductive structures. In addition, the method is backwardly compatible and customizable.
    Type: Application
    Filed: December 9, 2004
    Publication date: June 15, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Robert Groves, Peter Gruber, Kevin Petrarca, Richard Volant, George Walker
  • Publication number: 20060110754
    Abstract: Described and disclosed are devices, methods, and compositions of matter for the multiplex amplification and analysis of nucleic acid sequences in a sample using novel strand displacement amplification technologies in combination with bioelectronic microchip technology. Specifically, a nucleic acid in a sample is amplified to form amplicons, the amplicons are addressed to specified electronically addressable capture sites of the bioelectronic microchip, the addressed amplicons are captured and labeled, and then the capture sites are analyzed for the presence of label. Samples may be amplified using strand displacement amplification. The invention is also amenable to other amplification methodologies well known by those skilled in the art. The capture and label steps may be by a method of universal capture with sequence specific reporter, or by a method of sequence specific capture with universal reporter.
    Type: Application
    Filed: October 14, 2005
    Publication date: May 25, 2006
    Inventors: Michael Nerenberg, Carl Edman, Catherine Spargo, George Walker
  • Publication number: 20060046529
    Abstract: A method for forming a space transformer (and a space transformer formed by the method) having a first plate and a second plate, the plates being separated by a frame, and electrical connectors for providing electrical connections between electrical contacts which are relatively closely spaced on the first plate and relatively more widely spaced on the second plate. The method comprises attaching first ends of wires to first electrically conductive regions on the first plate; forming insulating layers over the wires; forming electrically conductive coverings over the insulating layers; and connecting second ends of the wires to second electrically conductive regions on the second plate.
    Type: Application
    Filed: September 2, 2004
    Publication date: March 2, 2006
    Inventors: Samuel McKnight, George Walker
  • Publication number: 20060029955
    Abstract: The present invention includes biochips for the measurement of cellular ion channels and methods of use and manufacture. The biochips of the present invention have enhanced sealing capabilities provided in part by chemically modifying the surface of the biochip surface or substrate or by exposure to an ionized gas. The present invention also includes novel cartridges for biochips.
    Type: Application
    Filed: July 5, 2005
    Publication date: February 9, 2006
    Inventors: Antonio Guia, George Walker, Mingxian Huang, Abdelleh Menikh, Lei Wu, Sithiphong Khachonesin, Julian Yuan, Jia Xu
  • Publication number: 20060027934
    Abstract: A carrier structure and method for fabricating a carrier structure with through-vias each having a conductive structure with an effective coefficient of thermal expansion which is less than or closely matched to that of the substrate, and having an effective elastic modulus value which is less than or closely matches that of the substrate. The conductive structure may include concentric via fill areas having differing materials disposed concentrically therein, a core of the substrate material surrounded by an annular ring of conductive material, a core of CTE-matched non-conductive material surrounded by an annular ring of conductive material, a conductive via having an inner void with low CTE, or a full fill of a conductive composite material such as a metal-ceramic paste which has been sintered or fused.
    Type: Application
    Filed: October 3, 2005
    Publication date: February 9, 2006
    Inventors: Daniel Edelstein, Paul Andry, Leena Buchwalter, Jon Casey, Sherif Goma, Raymond Horton, Gareth Hougham, Michael Lane, Xiao Liu, Chirag Patel, Edmund Sprogis, Michelle Steen, Brian Sundlof, Cornelia Tsang, George Walker, Yu-Ting Cheng, Kenneth Ocheltree, Robert Montoye
  • Publication number: 20050244913
    Abstract: This invention relates to methods for determining the activity of Lp-PLA2 in at least one sample from an animal. The invention also relates to methods for determining the inhibition of Lp-PLA2 activity in samples from animals that are administered an Lp-PLA2 inhibitor.
    Type: Application
    Filed: April 14, 2005
    Publication date: November 3, 2005
    Inventors: Yaping Shou, Yin-Fai Siu, George Walker
  • Publication number: 20050196746
    Abstract: The present invention provides novel biochips, biochip-based devices, and device configurations that can be used for ion transport measurement. The chips, devices, and designs of the present invention are particularly suited to high-throughput assays such as compound screening assays using patch clamping techniques. The invention includes high-density biochips made by novel methods and methods of making high density biochips, and also provides novel upper chamber configurations and fluidics designs for upper chambers of ion transport measurement devices that can be used in high throughput patch clamp assays. The present invention also includes methods of using ion transport measuring chips and devices of the present invention.
    Type: Application
    Filed: January 10, 2005
    Publication date: September 8, 2005
    Inventors: Jia Xu, Antonio Guia, George Walker, Mingxian Huang, Lei Wu, Sithiphong Khachonesin, Julian Yuan
  • Publication number: 20050121768
    Abstract: A carrier structure and method for fabricating a carrier structure with through-vias each having a conductive structure with an effective coefficient of thermal expansion which is less than or closely matched to that of the substrate, and having an effective elastic modulus value which is less than or closely matches that of the substrate. The conductive structure may include concentric via fill areas having differing materials disposed concentrically therein, a core of the substrate material surrounded by an annular ring of conductive material, a core of CTE-matched non-conductive material surrounded by an annular ring of conductive material, a conductive via having an inner void with low CTE, or a full fill of a conductive composite material such as a metal-ceramic paste which has been sintered or fused.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 9, 2005
    Applicant: International Business Machines Corporation
    Inventors: Daniel Edelstein, Paul Andry, Leena Buchwalter, Jon Casey, Sherif Goma, Raymond Horton, Gareth Hougham, Michael Lane, Xiao Liu, Chirag Patel, Edmund Sprogis, Michelle Steen, Brian Sundlof, Cornelia Tsang, George Walker
  • Publication number: 20050062492
    Abstract: The present invention is directed to a high density test probe which provides a means for testing a high density and high performance integrated circuits in wafer form or as discrete chips. The test probe is formed from a dense array of elongated electrical conductors which are embedded in an compliant or high modulus elastomeric material. A standard packaging substrate, such as a ceramic integrated circuit chip packaging substrate is used to provide a space transformer. Wires are bonded to an array of contact pads on the surface of the space transformer. The space transformer formed from a multilayer integrated circuit chip packaging substrate. The wires are as dense as the contact location array. A mold is disposed surrounding the array of outwardly projecting wires. A liquid elastomer is disposed in the mold to fill the spaces between the wires.
    Type: Application
    Filed: April 4, 2003
    Publication date: March 24, 2005
    Inventors: Brian Beaman, Keith Fogel, Paul Lauro, Maurice Norcott, Da-Yuan Shih, George Walker
  • Publication number: 20050058990
    Abstract: The present invention provides biochips for ion transport measurement, ion transport measuring devices that comprise biochips, and methods of using ion transport measuring devices and biochips that allow for the direct analysis of ion transport functions or properties. The present invention provides biochips, devices, apparatuses, and methods that allow for automated detection of ion transport functions or properties. The present invention also provides methods of making biochips and devices for ion transport measurement that reduce the cost and increase the efficiency of manufacture, as well as improve the performance of the biochips and devices. These biochips and devices are particularly appropriate for automating the detection of ion transport functions or properties, particularly for screening purposes.
    Type: Application
    Filed: June 1, 2004
    Publication date: March 17, 2005
    Inventors: Antonio Guia, Jia Xu, Lei Wu, Khachonesin Sithiphong, Maria Spassova, Huimin Tao, George Walker, Mingxian Huang, Guoliang Tao, Steven Saya, Glenn Walker, Zoya Zozulya
  • Publication number: 20040142463
    Abstract: The present invention recognizes that diagnosis and prognosis of many conditions can depend on the enrichment of rare cells from a complex fluid sample. In particular, the enrichment of fetal cells from maternal samples, such as maternal blood samples, can greatly aid in the detection of fetal abnormalities or a variety of genetic conditions. In addition, the present invention recognizes that the enrichment of rare malignant cells from patient samples, can aid in diagnosis, prognosis, and development of therapeutic modalities for patients. The invention includes microfabricated filters for filtering fluid samples and methods of enriching rare cells of fluid samples using microfabricated filters of the present invention. The invention also includes solutions for the selective sedimentation of red blood cells (RBCs) from a blood sample and methods of using selective RBC sedimentation solutions for enriching rare cells of a fluid sample.
    Type: Application
    Filed: November 4, 2003
    Publication date: July 22, 2004
    Inventors: George Walker, Junquan Xu, Douglas Yamanishi, Paul Hujsak, Lei Wu, Mingxian Huang, Guoliang Tao, Sara Snyder, Charina Yap