Patents by Inventor Christopher R. Knutson

Christopher R. Knutson 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: 20240053371
    Abstract: Disclosed are dispensers (100, 200, 300) and methods for dispensing and degassing a liquid (102). The dispensers and methods may include a heater (308) and a first tube (124, 502) constructed of a first material. The first tube may include a first end (124A) operable to be connected to a source (104) of the liquid and a second end (124B). The first tube may be connected to the heater via a conductive pathway thermally connecting the heater to the first tube. The first material may have a permeability such that a portion of the gas dissolved in the liquid passes through the first material to an atmosphere upon being degassed from a portion of the liquid within the first tube (124, 502).
    Type: Application
    Filed: December 31, 2021
    Publication date: February 15, 2024
    Applicant: Beckman Coulter, Inc.
    Inventors: Christopher R. Knutson, Kevin L. NOWAK, Jon P. LINDQUIST, Jr., Gamachu MELKAMU, Glenn A. DAVIS
  • Publication number: 20190390164
    Abstract: The present invention provides novel methods of cell staining, such as bovine sperm, using electroporation or osmolality treatments at viability-enhancing temperatures. Furthermore, methods of highly efficient cell sorting that are especially suitable in sorting bovine sperm using novel cell staining procedures are also provided.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Inventors: Amy L. Morjal, Christopher R. Knutson, Daniel Mueth, Joseph Plewa, Evan Tanner
  • Publication number: 20170204370
    Abstract: The present invention provides novel methods of cell staining, such as bovine sperm, using electroporation or osmolality treatments at viability-enhancing temperatures. Furthermore, methods of highly efficient cell sorting that are especially suitable in sorting bovine sperm using novel cell staining procedures are also provided.
    Type: Application
    Filed: March 31, 2017
    Publication date: July 20, 2017
    Inventors: Amy L. Morjal, Christopher R. Knutson, Daniel Mueth, Joseph Plewa, Evan Tanner
  • Publication number: 20170016879
    Abstract: The present invention provides novel methods of cell staining, such as bovine sperm, using electroporation or osmolality treatments at viability-enhancing temperatures. Furthermore, methods of highly efficient cell sorting that are especially suitable in sorting bovine sperm using novel cell staining procedures are also provided.
    Type: Application
    Filed: September 26, 2016
    Publication date: January 19, 2017
    Inventors: Amy L. Morjal, Christopher R. Knutson, Daniel Mueth, Joseph Plewa, Evan Tanner
  • Patent number: 9453849
    Abstract: The present invention provides novel methods of cell staining, such as bovine sperm, using electroporation or osmolality treatments at viability-enhancing temperatures. Furthermore, methods of highly efficient cell sorting that are especially suitable in sorting bovine sperm using novel cell staining procedures are also provided.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: September 27, 2016
    Assignee: PREMIUM GENETICS (UK) LIMITED
    Inventors: Amy L. Anderson, Christopher R. Knutson, Daniel Mueth, Joseph Plewa, Evan Tanner
  • Publication number: 20160116490
    Abstract: Methods and devices for evaluating a sample, e.g., a plasma sample, from a subject, for detecting a target red blood cell protein or antibody are disclosed. In one embodiment, optimized antibody screening methods and devices significantly reduce the level of non-specific binding to a surface (e.g., a test surface bound with a red blood cell (rbcm) preparation), thus allowing for more efficient detection and reduced test time. In one embodiment, the optimized antibody screening method includes an immunoglobulin G (IgG) binding moiety that binds selectively and specifically to the plasma IgG present relative to the binding to the lysed rbcm preparation. In another embodiment, an optimized antibody screening method is disclosed whereby non-specific binding caused by lysed red blood cell membrane preparations can be reduced by an agent that specifically cleaves a human IgG in the hinge region.
    Type: Application
    Filed: August 7, 2013
    Publication date: April 28, 2016
    Applicant: ARRYX, INC.
    Inventors: Christopher R. Knutson, Sridevi Kurella, Derek D. Doorneweerd, Christopher F. Grant, Timothy R. Kline
  • Publication number: 20120202225
    Abstract: Methods and devices for evaluating a sample from a subject for detecting a target red blood cell protein or antibody are disclosed. In one embodiment, optimized antibody screening methods and devices significantly reduce the level of non-specific binding to a surface (e.g., a test surface bound with a red blood cell preparation), thus allowing for more efficient detection and reduced test time. In other embodiments, the invention provides methods and devices for target capturing that include a substantially planar surface, optionally having an optimized angle, for capture. Alternative solid phase geometries for capture are disclosed. Optimized methods for cell deposition are also disclosed. Thus, optimized methods, devices, kits, assays for evaluating a sample are disclosed.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 9, 2012
    Applicant: ARRYX, INC.
    Inventors: Christopher R. Knutson, Christopher F. Grant, Timothy R. Kline, Derek D. Doorneweerd, Sridevi Kurella, Daniel M. Mueth, Matthew K. Runyon, Haojun Fu, Sergio O. Guevara
  • Publication number: 20090226880
    Abstract: The present invention provides novel methods of cell staining, such as bovine sperm, using electroporation or osmolality treatments at viability-enhancing temperatures. Furthermore, methods of highly efficient cell sorting that are especially suitable in sorting bovine sperm using novel cell staining procedures are also provided.
    Type: Application
    Filed: February 11, 2009
    Publication date: September 10, 2009
    Applicant: Arryx, Inc.
    Inventors: Amy L. Anderson, Christopher R. Knutson, Daniel Mueth, Joseph Plewa, Evan Tanner
  • Publication number: 20080144037
    Abstract: Apparatus for sorting and orienting sperm cells has a pair or walls in confronting relationship forming a flow chamber having inlet, a downstream outlet, and intermediate detector region. The inlet receives first and second spaced apart streams of input fluid and a third stream of sample fluid containing the cells to be sorted. The first and second streams have respective flow rates relative to third stream, such that the third stream is constricted forming a relatively narrow sample stream, so that the cells are oriented parallel to the walls. A detector detects desired cells and a sorter downstream of the detector for sorting the desired cells from the stream.
    Type: Application
    Filed: February 14, 2008
    Publication date: June 19, 2008
    Applicant: ARRYX, INC.
    Inventors: Daniel Mueth, Amy L. Anderson, Christopher R. Knutson, Joseph Plewa
  • Patent number: 7355696
    Abstract: Apparatus for sorting and orienting sperm cells has a pair or walls in confronting relationship forming a flow chamber having inlet, a downstream outlet, and intermediate detector region. The inlet receives first and second spaced apart streams of input fluid and a third stream of sample fluid containing the cells to be sorted. The first and second streams have respective flow rates relative to third stream, such that the third stream is constricted forming a relatively narrow sample stream, so that the cells are oriented parallel to the walls. A detector detect desired cells and a sorter downstream of the detector for sorting the desired cells from the stream.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: April 8, 2008
    Assignee: Arryx, Inc
    Inventors: Daniel Mueth, Amy L. Anderson, Christopher R. Knutson, Joseph Plewa
  • Patent number: RE46992
    Abstract: Apparatus for sorting and orienting sperm cells has a pair or walls in confronting relationship forming a flow chamber having inlet, a downstream outlet, and intermediate detector region. The inlet receives first and second spaced apart streams of input fluid and a third stream of sample fluid containing the cells to be sorted. The first and second streams have respective flow rates relative to third stream, such that the third stream is constricted forming a relatively narrow sample stream, so that the cells are oriented parallel to the walls. A detector detects desired cells and a sorter downstream of the detector for sorting the desired cells from the stream.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: August 14, 2018
    Assignee: PREMIUM GENETICS (UK) LTD
    Inventors: Daniel Mueth, Amy L. Morjal, Christopher R. Knutson, Joseph Plewa