Patents by Inventor Raj Rajagopal

Raj Rajagopal 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: 20120100531
    Abstract: Articles are provided for the detection of cells in a sample. The articles include a release element. The release element comprises a coated substrate that includes a cell extractant. The release element controls the release of the cell extractant into a liquid mixture containing the sample. Methods of use are also disclosed.
    Type: Application
    Filed: May 6, 2010
    Publication date: April 26, 2012
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Raj Rajagopal, Smarajit Mitra, Matthew D. Reier
  • Publication number: 20120094281
    Abstract: Articles are provided for the detection of cells in a sample. The articles include a release element comprising a cell extractant. The release element includes a shell structure that controls the release of the cell extractant into a liquid mixture containing the sample. Methods of use are also disclosed.
    Type: Application
    Filed: May 6, 2010
    Publication date: April 19, 2012
    Inventors: Raj Rajagopal, Smarajit Mitra, Matthew D. Reier
  • Publication number: 20120082977
    Abstract: Articles are provided for the detection of cells in a sample. The articles include a release element. The release element comprises an encapsulating agent and a cell extractant. The release element controls the release of the cell extractant into a liquid mixture containing the sample. Methods of use are also disclosed.
    Type: Application
    Filed: May 6, 2010
    Publication date: April 5, 2012
    Inventors: Raj Rajagopal, Robin E. Wright, Caroline M. Ylitalo, Smarajit Mitra, Matthew D. Reier
  • Publication number: 20120009588
    Abstract: The present invention provides methods to concentrate cells onto microparticles, to concentrate the microparticles, and to detect the cells. The present invention also includes unitary sample preparation and detection devices to be used in accordance with the methods.
    Type: Application
    Filed: December 31, 2009
    Publication date: January 12, 2012
    Inventors: Raj Rajagopal, Kurt J. Halverson, Manjiri T. Kshirsagar, James E. Aysta
  • Publication number: 20110318814
    Abstract: A method for isolating microorganisms from a sample, the sample including sample matrix and microorganisms, the method including the steps of providing a receptacle, the receptacle configured to allow filtering of the sample and to reversibly contain the sample and a concentration agent; adding the sample to the receptacle, wherein a microorganism-bound composition will be formed in the receptacle, the microorganism-bound composition including concentration agent-bound microorganisms and sample matrix; and filtering the microorganism-bound composition through a filter to collect the concentration agent-bound microorganisms on the filter, wherein the filter has an average pore size that is greater than the average size of the microorganisms. Kits and systems are also disclosed herein.
    Type: Application
    Filed: December 30, 2009
    Publication date: December 29, 2011
    Inventors: Manjiri T. Kshirsagar, Kurt J. Halverson, Raj Rajagopal
  • Publication number: 20110303657
    Abstract: Devices, systems, and methods for processing sample materials. The sample materials may be located in a plurality of process chambers in the device, which is rotated during heating of the sample materials.
    Type: Application
    Filed: August 22, 2011
    Publication date: December 15, 2011
    Inventors: William Bedingham, Raj Rajagopal, Barry W. Robole
  • Publication number: 20110256531
    Abstract: Articles (610) are provided for the detection of cells in a sample. The articles include a hydrogel (640) comprising a cell extractant. Methods of use are also disclosed.
    Type: Application
    Filed: September 28, 2009
    Publication date: October 20, 2011
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Raj Rajagopal, Matthew D. Reier, Robin E. Wright, Caroline M. Ylitalo
  • Patent number: 8003926
    Abstract: Devices, systems, and methods for processing sample materials. The sample materials may be located in a plurality of process chambers in the device, which is rotated during heating of the sample materials.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: August 23, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: William Bedingham, Raj Rajagopal, Barry W. Robole
  • Publication number: 20110183360
    Abstract: The present invention provides antibodies that bind to the endospore of the bacterium Clostridium difficile, methods of making such antibodies, and methods of using such antibodies, including methods of detecting C. difficile endospores.
    Type: Application
    Filed: February 25, 2009
    Publication date: July 28, 2011
    Inventors: Raj Rajagopal, Ai-Ping Wei
  • Publication number: 20110097814
    Abstract: The application discloses embodiments of detection devices including a sensor component in a flow path between a first flow path portion and a second flow path portion. In embodiments described, the sensor component includes a receptor in a polymerized composition. The receptor is configured to bind with an analyte in a test sample. Upon binding the sensor component undergoes a detectable change in response to interaction of the analyte with the receptor.
    Type: Application
    Filed: November 20, 2008
    Publication date: April 28, 2011
    Inventors: G. Marco Bommarito, Joseph J. Stoffel, Vinod P. Menon, Brinda B. Lakshmi, Timothy J. Diekmann, Gustavo H. Castro, Paul J. Cobian, Raj Rajagopal, Patrick A. Mach
  • Patent number: 7871827
    Abstract: Methods and devices for removing small negatively charged molecules from a biological sample mixture that uses an anion exchange material.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: January 18, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Ranjani V. Parthasarathy, Raj Rajagopal, Erin E. Olson, Frank J. Beissel, IV, William Bedingham, Barry W. Robole
  • Publication number: 20100285520
    Abstract: A system and method for preparing samples to test an environmental surface for an analyte of interest. The system can include a deformable self-supporting receptacle comprising a reservoir, and a loaded substrate positioned in the reservoir of the deformable self-supporting receptacle. The loaded substrate can include a substrate and a source collected from the surface. The method can include combining the loaded substrate and a diluent in the reservoir, and agitating the loaded substrate and the diluent to form a liquid composition comprising the source and the diluent.
    Type: Application
    Filed: November 19, 2008
    Publication date: November 11, 2010
    Inventors: Kurt J. Halverson, Stephen C.P. Joseph, Raj Rajagopal, Matthew D. Reier, David J. Velasquez, Cynthia D. Zook, Sailaja Chandrapati
  • Publication number: 20100260903
    Abstract: A method of determining the quality of oil by irradiating the oil at a first wavelength, e.g., of about 470 nm, measuring a level of fluorescence of the oil at a second wavelength, e.g., of about 520 nm, comparing the measured fluorescence level to a predetermined threshold level to determine whether or not the oil quality is acceptable. The oil is preferably discarded if the measured fluorescence level exceeds the predetermined threshold level, which can be generally dependent on the oil composition. The fluorescence is correlated to the level of polar components in the oil. Also described are devices for determining the quality of oil via fluorescence.
    Type: Application
    Filed: January 4, 2008
    Publication date: October 14, 2010
    Inventors: Ai-Ping . Wei, Raj Rajagopal, Catherine Bineau
  • Publication number: 20100255484
    Abstract: A system and method for preparing and collecting samples for analyte testing. The system can include a sample preparation system and a sample collection system coupled to the sample preparation system. The sample preparation system can include at least one of a deformable self-supporting receptacle comprising a reservoir and a freestanding receptacle comprising a reservoir. The reservoir can be adapted to contain a liquid composition. The sample collection system can be positioned in fluid communication with a reservoir of the sample preparation system, and can be adapted to capture an analyte of interest. The method can include providing a fluid path defined at least partially by the sample preparation system and the sample collection system, positioning the liquid composition in a reservoir of the sample preparation system, and moving at least a portion of the liquid composition in the fluid path to the sample collection system.
    Type: Application
    Filed: November 19, 2008
    Publication date: October 7, 2010
    Inventors: Kurt J. Halverson, Stephen C.P. Joseph, Raj Rajagopal, David J. Velasquez, Cynthia D. Zook, Sailaja Chandrapati, Daniel E. Siltberg, Paul J. Cobian, Theresa J. Gerten
  • Publication number: 20100248215
    Abstract: A system and method for preparing and delivering samples for analyte testing. The system can include a sample preparation system and a sample delivery system coupled to the sample preparation system. The sample preparation system can include a deformable self-supporting receptacle comprising a reservoir adapted to contain a liquid composition comprising a source and a diluent. The sample delivery system can include a valve positioned in fluid communication with the reservoir and adapted to control the removal of a sample from the sample preparation system. The method can include applying pressure to the deformable self-supporting receptacle to remove a sample from the sample preparation system via the sample delivery system.
    Type: Application
    Filed: November 19, 2008
    Publication date: September 30, 2010
    Inventors: Kurt J. Halverson, Stephen C.P. Joseph, Raj Rajagopal, Matthew D. Reier, David J. Velasquez, Cynthia D. Zook, Sailaja Chandrapati
  • Publication number: 20100248216
    Abstract: A system and method for preparing and analyzing samples. The system can include a sample preparation system and a sample detection system coupled to the sample preparation system. The sample preparation system can include a deformable self-supporting receptacle comprising a reservoir adapted to contain a liquid composition comprising a source and a diluent. The sample detection system can be positioned in fluid communication with the reservoir, and can be adapted to analyze a sample of the liquid composition for an analyte of interest. The system can further include a fluid path defined at least partially by the reservoir and the sample detection system. The method can include applying pressure to the deformable self-supporting receptacle to move a sample of the liquid composition in the fluid path to the sample detection system, and analyzing the sample for the analyte of interest with the sample detection system.
    Type: Application
    Filed: November 19, 2008
    Publication date: September 30, 2010
    Applicant: 3M Innovative Properties Company
    Inventors: Kurt J. Halverson, Stephen C.P. Joseph, Raj Rajagopal, Matthew D. Reier, David J. Velasquez, Cynthia D. Zook, Sailaja Chandrapati
  • Publication number: 20080314895
    Abstract: Devices, systems, and methods for processing sample materials. The sample materials may be located in a plurality of process chambers in the device, which is rotated during heating of the sample materials.
    Type: Application
    Filed: September 5, 2008
    Publication date: December 25, 2008
    Inventors: William Bedingham, Raj Rajagopal, Barry W. Robole
  • Patent number: 7435933
    Abstract: Devices, systems, and methods for processing sample materials. The sample materials may be located in a plurality of process chambers in the device, which is rotated during heating of the sample materials.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: October 14, 2008
    Inventors: William Bedingham, Barry W. Robole, Raj Rajagopal
  • Publication number: 20080103297
    Abstract: Methods and devices for removing small negatively charged molecules from a biological sample mixture that uses a solid-phase extraction material that includes a hydrophilic solid support at least partially embedded within a hydrophobic matrix.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 1, 2008
    Inventors: Ranjani Parthasarathy, Raj Rajagopal, Vicky Morris, William Bedingham, Barry Robole
  • Patent number: 7347976
    Abstract: Methods and devices for removing small negatively charged molecules from a biological sample mixture that uses a solid-phase extraction material that includes a hydrophilic solid support at least partially embedded within a hydrophobic matrix.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: March 25, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Ranjani V. Parthasarathy, Raj Rajagopal, Vicky L. Morris, William Bedingham, Barry W. Robole