Patents by Inventor Lev J. Leytes

Lev J. Leytes 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: 6902703
    Abstract: The invention provides an integrated sample-processing system and components thereof for preparing and/or analyzing samples. The components may include a transport module, a fluidics module, and an analysis module, among others.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: June 7, 2005
    Assignee: LJL Biosystems, Inc.
    Inventors: Samuel A. Marquiss, Christopher G. Cesar, Jon F. Petersen, David P. Stumbo, Amer El-Hage, Glenn R. Edwards, Douglas N. Modlin, Lev J. Leytes, Samuel Burd
  • Patent number: 6488892
    Abstract: Sample-holding devices and systems for efficiently utilizing relatively small-volume fluid samples.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: December 3, 2002
    Assignee: LJL BioSystems, Inc.
    Inventors: William G. Burton, Douglas N Modlin, Derrick A. Richardson, Jon F. Petersen, Joseph S. Leytes, John C. Owicki, Amer El-Hage, Lev J. Leytes
  • Publication number: 20010048899
    Abstract: The invention provides an integrated sample-processing system and components thereof for preparing and/or analyzing samples. The components may include a transport module, a fluidics module, and an analysis module, among others.
    Type: Application
    Filed: February 5, 2001
    Publication date: December 6, 2001
    Applicant: LJL BioSystems, Inc.
    Inventors: Samuel A. Marouiss, Christopher G. Cesar, Jon F. Petersen, David P. Stumbo, Amer El-Hage, Glenn R. Edwards, Douglas N. Modlin, Lev J. Leytes, Samuel Burd
  • Publication number: 20010046673
    Abstract: Methods and apparatus for detecting polynucleotide hybridization in luminescence-based assays. The methods may include (1) allele-specific hybridization, using luminescence detection, (2) allele-specific oligonucleotide ligation, using dye-labeled oligonucleotide ligation with luminescence resonance energy transfer (FRET) detection, and (3) allele-specific nucleotide incorporation, using primer extension with luminescence polarization (FP) detection. More specifically, the methods may include (1) locating a sample containing a nucleic acid material at an examination site, (2) illuminating the sample, (3) detecting light transmitted from the sample, and (4) determining the presence, absence, and/or identity of a nucleic acid target in the sample using the light transmitted from the sample.
    Type: Application
    Filed: January 25, 2001
    Publication date: November 29, 2001
    Applicant: LJL BioSystems, Inc.
    Inventors: Todd E. French, Douglas N. Modlin, John C. Owicki, James S. Richey, Lev J. Leytes, Enal S. Razvi, Yan Zhang-Klompus, Peter R. Panfili
  • Patent number: 6297018
    Abstract: Methods and apparatus for detecting polynucleotide hybridization in luminescence-based assays. The methods may include (1) allele-specific hybridization, using luminescence detection, (2) allele-specific oligonucleotide ligation, using dye-labeled oligonucleotide ligation with luminescence resonance energy transfer (FRET) detection, and (3) allele-specific nucleotide incorporation, using primer extension with luminescence polarization (FP) detection. More specifically, the methods may include (1) locating a sample containing a nucleic acid material at an examination site, (2) illuminating the sample, (3) detecting light transmitted from the sample, and (4) determining the presence, absence, and/or identity of a nucleic acid target in the sample using the light transmitted from the sample.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: October 2, 2001
    Assignee: LJL BioSystems, Inc.
    Inventors: Todd E. French, Douglas N. Modlin, John C. Owicki, James S. Richey, Lev J. Leytes, Enal S. Razvi
  • Patent number: 6025985
    Abstract: A moveable control unit for a high-throughput analyzer that can be operatively mounted at a plurality of locations on the analyzer housing.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: February 15, 2000
    Assignee: LJL BioSystems, Inc.
    Inventors: Lev J. Leytes, William G. Burton, Yong Paik, Glenn R. Edwards, Douglas N. Modlin, Amer El-Hage
  • Patent number: 5310523
    Abstract: A self-contained assembly for assaying an analyte in a liquid sample. The pair of disc-like rotatable plates forming the assembly are relatively rotatable to align reagent reservoirs in one plate with a reaction well in the other plate, for sequential addition of multiple reagents, either in liquid or solid form, to the reaction well. In one embodiment, the reaction well includes solid-phase particles which can be transferred from the reaction well to spaced wells in the assembly by a combination of relative movement of the plate, and rotation of the entire assembly.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: May 10, 1994
    Assignee: Chiron Corporation
    Inventors: Rick T. Smethers, Lev J. Leytes, Brian D. Warner, Robert R. Shadel, Michael S. Urdea
  • Patent number: 4690165
    Abstract: A mixing valve includes a housing having inlet ports and an outlet port that intersect at a valve chamber. A valve core within the valve chamber includes passages in fluid communication with the inlet and outlet ports. The passages intersect at a cavity within the valve core. An elastomeric seal retained within the cavity sealingly engages the valve core around the passages in the absence of fluid pressure in the inlets. Injection of a pressurized fluid in one of the inlets causes the seal to move away from both the corresponding inlet passage to permit fluid flow from the pressurized inlet port to the outlet port and compresses the seal around the other inlet port to provide a tighter seal than existed before application of pressure to the first port.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: September 1, 1987
    Assignee: Beckman Instruments, Inc.
    Inventors: Lev J. Leytes, Harry A. Penhasi
  • Patent number: 4476017
    Abstract: A column for use in DNA synthesis. The column is transparent and is disposable to allow access to the resin beads within the column. The column includes end caps which are engageable with a housing and a screw to secure the column in the housing.
    Type: Grant
    Filed: June 3, 1983
    Date of Patent: October 9, 1984
    Assignee: Beckman Instruments, Inc.
    Inventors: Daniel H. Scharff, Lev J. Leytes