Patents by Inventor Leah Tolosa

Leah Tolosa 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: 8993972
    Abstract: A fluorescence based sensor system that provides improved signal-to-noise over prior systems is provided. The system includes a fluorescence based sensing medium that is contained a recessed cavity with reflective sides that allow for more uniform excitation of the fluorescence based sensing medium by the excitation light.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: March 31, 2015
    Assignee: University of Maryland Baltimore County
    Inventors: Govind Rao, Hung Lam, Yordan Kostov, Leah Tolosa, Xudong Ge
  • Publication number: 20150010994
    Abstract: A system and method for measuring at least one bioprocess parameter utilizes a barrier that separates an external sensor from a culture medium. The barrier allows analytes to diffuse in and out of the culture vessel, thereby allowing the bioprocess parameter to be measured non-invasively by the external sensor.
    Type: Application
    Filed: June 10, 2014
    Publication date: January 8, 2015
    Applicant: University of Maryland Baltimore County
    Inventors: Govind RAO, Yordan KOSTOV, Leah TOLOSA
  • Patent number: 8852921
    Abstract: A system and method for measuring at least one bioprocess parameter utilizes a barrier that separates an external sensor from a culture medium. The barrier allows analytes to diffuse in and out of the culture vessel, thereby allowing the bioprocess parameter to be measured non-invasively by the external sensor.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: October 7, 2014
    Assignee: University of Maryland Baltimore County
    Inventors: Govind Rao, Yordan Kostov, Leah Tolosa
  • Patent number: 8654319
    Abstract: A low cost sensing system that can measure both chlorophyll concentration and turbidity is provided. The system is an optical system that utilizes at least three light sensors for measuring side-scattered and forward scattered light, as well as fluorescence. The system is able to take optical density measurements, steady state fluorescence measurements and maximum fluorescence measurements, and can be configured for wireless control and data transmission. The system may also be housed in one or more fluidtight housings so as to make it submersible.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: February 18, 2014
    Assignee: University of Maryland, Baltimore County
    Inventors: Govind Rao, Hung Lam, Yordan Kostov, Leah Tolosa, Xudong Ge
  • Publication number: 20130281806
    Abstract: A non-invasive gas analyte sensing and monitoring system and method is provided that is particularly applicable to transcutaneous monitoring of arterial blood gases in a mammal. The system and method relies on diffusion of the analyte to be measured into a diffusion chamber and remote sensing of the analyte in the diffusion chamber using optical chemical sensors and associated optoelectronics.
    Type: Application
    Filed: September 30, 2011
    Publication date: October 24, 2013
    Inventors: Govind Rao, Yordan Kostov, Xudong Ge, Leah Tolosa, Hyung Woo, Rose Viscardi
  • Publication number: 20130280797
    Abstract: A bioprocessing system for protein manufacturing is provided that is compact, integrated and suited for on-demand production and delivery of therapeutic proteins to patients. The system can also be used for efficient on-demand production of any type of protein.
    Type: Application
    Filed: March 8, 2012
    Publication date: October 24, 2013
    Inventors: Govind Rao, Yordan Kostov, Leah Tolosa, Lam Hung, Xudong Ge, Douglas Frey, Virenda Singh
  • Publication number: 20130253295
    Abstract: Systems and methods for determining an in vivo concentration of a small molecule substance of interest is provided that takes advantage of the semi-permeable nature of skin, which allows small molecules to passively diffuse through the skin and onto the skin surface. The systems and methods of the present invention allow for the collection of these small molecules that have passively diffused through the skin without skin disruption or breaking of the skin. The systems and methods of the present invention are noninvasive, painless and safe even for delicate newborns, and are particularly suited for the determination of blood glucose in newborns and infants in a noninvasive manner.
    Type: Application
    Filed: February 4, 2013
    Publication date: September 26, 2013
    Inventors: Leah TOLOSA, Xudong GE, Yordan KOSTOV, Michael TOLOSA, Govind RAO
  • Publication number: 20130079661
    Abstract: A noninvasive remote parameter sensor and sensing method is provided that is particularly suited for the remote monitoring of skin temperature. The sensor and sensing method utilize luminescence-based sensors that are non-toxic and non-irritating to the skin. The sensor preferably utilizes one or more types of fluorophores that are embedded in a soft hydrogel. The sensor is illuminated with excitation light, and temperature is monitored by detecting and analyzing the emission light from the fluorophores. Because a soft hydrogel is used, the sensor can be gently wiped off the skin at the conclusion of temperature measurements.
    Type: Application
    Filed: June 29, 2012
    Publication date: March 28, 2013
    Inventors: Leah Tolosa, Hung Lam, Yordan Kostov, Steven M. Falk, Govind Rao
  • Publication number: 20120283575
    Abstract: A remote parameter sensing system is provide that includes a gel sensor, a light source, a detector and a controller 140. The gel sensor is in contact with a surface where the parameter is to be measured, and is preferably a gel that is embedded with a chemical that emits light 160 (via, for example, fluorescence) when it is excited by excitation light from the light source at an appropriate excitation frequency. The chemical properties of the gel sensor are such that at least one characteristic of the emission light (such as, for example, emission intensity) varies as a function of variations in the parameter being measured. The system is particularly suited for use as remote body temperature sensing system in incubators and radiant warmers for infant and neonatal care.
    Type: Application
    Filed: October 12, 2010
    Publication date: November 8, 2012
    Inventors: Govind Rao, Yordan Kostov, Leah Tolosa, Hung Lam
  • Publication number: 20120171760
    Abstract: A system and method for measuring at least one bioprocess parameter utilizes a barrier that separates an external sensor from a culture medium. The barrier allows analytes to diffuse in and out of the culture vessel, thereby allowing the bioprocess parameter to be measured non-invasively by the external sensor.
    Type: Application
    Filed: June 21, 2010
    Publication date: July 5, 2012
    Inventors: Govind Rao, Yordan Kostov, Leah Tolosa
  • Publication number: 20110273705
    Abstract: A low cost sensing system that can measure both chlorophyll concentration and turbidity is provided. The system is an optical system that utilizes at least three light sensors for measuring side-scattered and forward scattered light, as well as fluorescence. The system is able to take optical density measurements, steady state fluorescence measurements and maximum fluorescence measurements, and can be configured for wireless control and data transmission. The system may also be housed in one or more fluidtight housings so as to make it submersible.
    Type: Application
    Filed: January 25, 2010
    Publication date: November 10, 2011
    Applicant: UNIVERSITY OF MARYLAND BALTIMORE COUNTY
    Inventors: Govind Rao, Hung Lam, Yordan Kostov, Leah Tolosa, Xudong Ge
  • Publication number: 20100207035
    Abstract: A fluorescence based sensor system that provides improved signal-to-noise over prior systems is provided. The system includes a fluorescence based sensing medium that is contained a recessed cavity with reflective sides that allow for more uniform excitation of the fluorescence based sensing medium by the excitation light.
    Type: Application
    Filed: January 25, 2010
    Publication date: August 19, 2010
    Inventors: Govind RAO, Hung LAM, Yordan KOSTOV, Leah TOLOSA, Xudong GE
  • Patent number: 7718353
    Abstract: A protein sensing molecule is capable of binding an analyte in a sample. The protein sensing molecule includes a first detectable quality that changes in a concentration dependent manner when the protein sensing molecule is bound to the analyte. The protein sensing molecule also includes a second detectable quality that does not undergo substantial change when the protein sensing molecule is bound to the analyte. The protein sensing molecule may be used in methods for characterizing samples and may also be used in sensors.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: May 18, 2010
    Assignee: University of Maryland Baltimore County
    Inventors: Leah Tolosa, Govind Rao, Xudong Ge
  • Publication number: 20080261255
    Abstract: A protein sensing molecule is capable of binding an analyte in a sample. The protein sensing molecule includes a first detectable quality that changes in a concentration dependent manner when the protein sensing molecule is bound to the analyte. The protein sensing molecule also includes a second detectable quality that does not undergo substantial change when the protein sensing molecule is bound to the analyte. The protein sensing molecule may be used in methods for characterizing samples and may also be used in sensors.
    Type: Application
    Filed: March 1, 2004
    Publication date: October 23, 2008
    Inventors: Leah Tolosa, Govind Rao, Xudong Ge
  • Patent number: 6197534
    Abstract: Disclosed are methods and sensors for detecting the presence or concentration of an analyte in a sample, preferably a sugar such as glucose, which preferably utilizes a labeled engineered protein, or fragment thereof, that is capable of binding the analyte to be detected.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: March 6, 2001
    Inventors: Joseph R. Lakowicz, Leah Tolosa, Lisa Eichhorn, Govind Rao