Patents Represented by Attorney David R Preston & Associates APC
  • Patent number: 7468255
    Abstract: The present invention includes a method of measuring cytolytic activity including providing a device capable of monitoring cell-substrate impedance operably connected to an impedance analyzer, adding target cells to at least one well of the device, adding effector cells to the at least one well, monitoring impedance of the at least one well and optionally determining a cell index from the impedance, wherein monitoring impedance includes measuring impedance during at least one time point before and at least one time point after adding effector cells, and determining viability of said target cells after adding effector cells by comparing the impedance or optionally the cell index at the at least one time point after adding effector cells to the impedance or optionally the cell index at the at least one time point before adding effector cells.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: December 23, 2008
    Assignee: ACEA Biosciences
    Inventors: Xiao Xu, Yama Abassi, Xiaobo Wang
  • Patent number: 7459303
    Abstract: A device for monitoring the migration or invasion of a biological particle such as a cell is disclosed. The device includes an upper chamber adapted to receive and retain a cell sample, a lower chamber having at least two electrodes, and a biocompatible porous membrane having a porosity sufficient to allow cells to migrate therethrough. The membrane is disposed in the device so as to separate the upper and lower chambers from one another. Migration of cells through the porous membrane permits contact between the migrating cells and one or more electrodes of the lower chamber. The contact provides a detectable change in impedance between or among the electrodes.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: December 2, 2008
    Assignee: ACEA Biosciences
    Inventors: Xiaobo Wang, Xiao Xu
  • Patent number: 7267846
    Abstract: The present invention recognizes that lenses, such as contact lenses, can be pigmented using an ink that includes oligomers, polymers or polymerizable monomers. The ink can be used to make images on or within the lens. Images made using these inks are may be digital or analogue and can be used in a variety of printing methods, including ink-jet printing.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: September 11, 2007
    Inventors: Praful Doshi, James Edward Fox, Philip Gareth Bentley, Jagvi Ramesh Patel, Chidambar L. Kulkarni, Stephen D. Halbe, Hananiah J. Dalton
  • Patent number: 7232798
    Abstract: The invention relates to the use of cyclic Prolyl Glycine (“cyclic PG” or “cPG”) and analogs and mimetics thereof, as neuroprotective agents for the treatment and or prevention of neurological disorders including but not limited to cerebral ischemia or cerebral infarction resulting from a range of phenomena, such as thromboembolic or hemorrhagic stroke, cerebral basospasms, hypoglycemia, cardiac arrest, status epilepticus, perinatal asphyxia, anoxia such as from drowning, pulmonary surgery, and cerebral trauma, as well as to the treatment and prevention of chronic neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, and Huntington's disease, and as anticonvulsants.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: June 19, 2007
    Inventor: Loi H. Tran
  • Patent number: 7011485
    Abstract: The present invention provides an improved hand truck having a tiltable platform for carrying heavy objects, which is safe to use and easily maneuverable, and requires the minimum amount of energy required for movement of heavy objects. The present invention provides a tiltable hand truck with minimal risk of injury and minimal risk of accidents for the operator while operating the present invention. The present invention provides a method for transporting a heavy load using a tiltable platform, which makes it easy for heavy objects to be transported with minimal effort.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: March 14, 2006
    Inventor: Robert L. Henry
  • Patent number: 6900013
    Abstract: The present invention recognizes that identifying genes expressed during developmental processes, stress responses, and disease states can advance understanding of these biological functions, and can contribute to identifying targets for therapeutic drugs. In addition, the present invention recognizes that rapid and reliable profiling of genetic variations, such as mutations and SNPs, is of increasing importance to diagnostics, prognostics, forensics, heredity determinations, and pharmacogenetics. One aspect of the present invention provides a method of identifying one or more nucleic acid molecules that are expressed under a given set of conditions based on their complementarity to known sequences, or one or more mutations or SNPs in a population of nucleic acid molecules.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: May 31, 2005
    Assignee: AVIVA Biosciences Corporation
    Inventors: Guoqing Wang, Lei Wu, Xiaobo Wang, Jing Cheng, WeiPing Yang
  • Patent number: 6837065
    Abstract: The present invention relates to a mist cooler and in particular to a means for cooling the air partially or wholly surrounding a conventional air cooled condenser of an air cooler or a refrigeration unit. The present invention is particularly adaptable as an addition, which works in conjunction with an existing air cooler by lowering the temperature of the air before the air enters the air intake of the air cooler or refrigeration unit. The present invention can be combined as an addition to any air conditioning air cooled condenser for residential, commercial, industrial, or institutional application.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: January 4, 2005
    Inventor: Stephen Permetti
  • Patent number: 6806050
    Abstract: This invention provides electromagnetic chips and electromagnetic biochips having arrays of individually addressable micro-electromagnetic units, as well as methods of utilizing these chips for directed manipulation of micro-particles and micro-structures such as biomolecules and chemical reagents. An electromagnetic biochip comprises an individually addressable micro-electromagnetic unit chip with ligand molecules immobilized on its surface. By controlling the electromagnetic field at each unit of the array and combining this control with magnetic modification of biomolecules, these chips can be used for directed manipulation, synthesis and release of biomolecules in order to increase sensitivity of biochemical or chemical analysis and reduce assay time. Other advantages with these chips include minimized damages to biological molecules and increased reproducibility of assay results.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: October 19, 2004
    Assignee: AVIVA Biosciences
    Inventors: Yuxiang Zhou, Litian Liu, Ken Chen, Depu Chen, Jia Wang, Zewen Liu, Zhimin Tan, Junquan Xu, Xiaoshan Zhu, Xuezhong He, Wenzhang Xie, Zhiming Li, Xiumel Liu
  • Patent number: 6565808
    Abstract: The present invention recognizes that it can be desirable to have a sample receiving chamber integral to or engageable with a test platform, such as a test platform that includes a test strip. The sample receiving chamber is preferably separate or separable from the test platform, but that need not be the case. Preferably, a fluid flow actuating device or structure, such as a valve separates the sample receiving chamber from the test platform. A first aspect of the present invention is a test device that includes a sample receiving chamber and a test platform that preferably includes a test element. A second aspect of the present invention is a method of detecting an analyte in a sample, including: providing a sample, contacting the sample with a test device and detecting the analyte in the sample.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: May 20, 2003
    Assignee: Acon Laboratories
    Inventors: Robert Thomas Hudak, Lorraine Bautista
  • Patent number: D632480
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: February 15, 2011
    Inventor: Jill LaCorte