Patents by Inventor David Gelfand

David Gelfand 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: 11519468
    Abstract: A bi-directional clutch assembly equipped with a pair of laterally-spaced, selectable one-way clutches configured in a compact arrangement. The bi-directional clutch assembly establishes a LOCK-LOCK mode when both SOWC's are non-actuated, establishes a FREEWHEEL mode when both SOWC's are actuated, and establishes a pair of LOCK-RATCHET mode when one SOWC is actuated and the other is not actuated. Coils units of the SOWC's are energized to shift an actuator toward active struts of an outer race. The actuator is rotationally fixed to the outer race. The active struts are biased toward the deployed position, and the actuator is biased toward the non-actuated position. The actuator includes a strut engagement feature that contacts the active struts and causes pivotal movement of the active struts to the non-deployed position.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: December 6, 2022
    Assignee: MAGNA POWERTRAIN INC.
    Inventors: David Gelfand, Adrian Cioc
  • Publication number: 20220163073
    Abstract: A bi-directional clutch assembly equipped with a pair of laterally-spaced, selectable one-way clutches configured in a compact arrangement. The bi-directional clutch assembly establishes a LOCK-LOCK mode when both SOWC's are non-actuated, establishes a FREEWHEEL mode when both SOWC's are actuated, and establishes a pair of LOCK-RATCHET mode when one SOWC is actuated and the other is not actuated. Coils units of the SOWC's are energized to shift an actuator toward active struts of an outer race. The actuator is rotationally fixed to the outer race. The active struts are biased toward the deployed position, and the actuator is biased toward the non-actuated position. The actuator includes a strut engagement feature that contacts the active struts and causes pivotal movement of the active struts to the non-deployed position.
    Type: Application
    Filed: March 31, 2020
    Publication date: May 26, 2022
    Inventors: David GELFAND, Adrian CIOC
  • Patent number: 11255387
    Abstract: A controllable one-way clutch assembly having an electromagnetic actuator module equipped with an energizeable coil assembly, a strut moveable in response to energization of the coil assembly from a released position to a locked position, and a latching mechanism operable to releaseably hold the strut in the released position when the coil assembly is not energized.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: February 22, 2022
    Assignee: MAGNA POWERTRAIN INC.
    Inventors: Darrell Greene, Alberto Passos, Dennis (Tak Man) Loui, Dusan Milacic, David Gelfand, Adrian Cioc, Ranjit Uppal
  • Publication number: 20210140492
    Abstract: A controllable one-way clutch assembly having an electromagnetic actuator module equipped with an energizeable coil assembly, a strut moveable in response to energization of the coil assembly from a released position to a locked position, and a latching mechanism operable to releaseably hold the strut in the released position when the coil assembly is not energized.
    Type: Application
    Filed: February 22, 2018
    Publication date: May 13, 2021
    Inventors: Darrell GREENE, Alberto PASSOS, Dennis (Tak Man) LOUI, Dusan MILACIC, David GELFAND, Adrian CIOC, Ranjit UPPAL
  • Patent number: 7890268
    Abstract: The present invention is directed to an improved analysis procedure for the comparative sequencing of nucleic acids using multistage mass spectrometry. More precisely, the invention is directed to a method enabling the de-novo sequencing of nucleic acid molecules using multistage mass spectrometry.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: February 15, 2011
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Thomas Koch, Roderic Fuerst, Uwe Kobold, Dieter Heindl, Herbert von der Eltz, David Gelfand, Ivo Gut, Christoph Steinbeck
  • Publication number: 20070154914
    Abstract: The present invention provides reaction mixtures that include blocked oligonucleotides comprising 2?-terminator nucleotides. The blocked oligonucleotides are rendered extendible when the 2?-terminator nucleotides are removed from the oligonucleotides, e.g., via pyrophosphorolysis. The reaction mixtures can be used in various nucleic acid polymerization and/or amplification assays, among many other applications. In addition to reaction mixtures, the invention also provides related methods and reaction mixtures.
    Type: Application
    Filed: October 18, 2006
    Publication date: July 5, 2007
    Applicant: ROCHE MOLECULAR SYSTEMS, INC.
    Inventors: David Gelfand, Keith Bauer, Amar Gupta, Veeraiah Bodepudi, John Niemiec
  • Publication number: 20060257885
    Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification, assay.
    Type: Application
    Filed: August 11, 2005
    Publication date: November 16, 2006
    Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
  • Publication number: 20060084092
    Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification assay.
    Type: Application
    Filed: August 11, 2005
    Publication date: April 20, 2006
    Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
  • Publication number: 20060078914
    Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification, assay.
    Type: Application
    Filed: August 11, 2005
    Publication date: April 13, 2006
    Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
  • Publication number: 20050255499
    Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification assay.
    Type: Application
    Filed: January 27, 2005
    Publication date: November 17, 2005
    Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
  • Publication number: 20050037991
    Abstract: The invention provides compositions the comprise nucleotides and/or nucleosides having blocking groups at 2?-positions of sugar moieties. Methods of synthesizing these nucleic acids are also provided.
    Type: Application
    Filed: June 28, 2004
    Publication date: February 17, 2005
    Applicant: Roche Molecular Systems, Inc.
    Inventors: Veeraiah Bodepudi, Stephen Will, David Gelfand
  • Publication number: 20050037398
    Abstract: The present invention provides methods of extending primer nucleic acids and sequencing target nucleic acids. The methods include the use of 2?-terminator nucleotides to effect chain termination. In addition to related reaction mixtures and kits, the invention also provides computers and computer readable media.
    Type: Application
    Filed: June 28, 2004
    Publication date: February 17, 2005
    Applicant: Roche Molecular Systems, Inc.
    Inventors: David Gelfand, Fred Reichert, Veeraiah Bodepudi, Amar Gupta, Stephen Will, Thomas Myers