Patents by Inventor Difei Yang

Difei Yang 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: 8367013
    Abstract: An optical reflectance kit including a reading device and membrane test strip is disclosed for conducting a lateral flow assay. The reading device is portable. Assays may be conducted on bodily fluids to detect with high sensitivity the presence of certain hormones, glucose, or other bodily fluids of interest. Membrane test strips may receive a test fluid or test sample containing an analyte to be detected. The membrane test strips may be inserted directly into a receiving port of a reading device. Shielding stray light from the receiving port improves sensitivity and reduces the entry of stray or ambient light into the reading device. The reading device also includes one or more sensors capable of detecting the intensity of reflected electromagnetic radiation.
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: February 5, 2013
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Rosann Kaylor, Difei Yang, Michael Knotts
  • Patent number: 7102752
    Abstract: An analyzer useful in determining the presence of an analyte using a diffraction based sensing device and methods and systems using this device. The present invention may be used with a variety of different diffraction-based diagnostic methods and systems. The analyzer enhances the accuracy and/or usefulness of these devices in detecting analytes, while providing more ease-of-use and convenience to the user. The analyzer may include a light source, a photodiode, a microprocessor and a display system for informing the user of the result. Other features include mirrors, lenses, a sample holder, and a mask for blocking out some light. The analyzer and related method and system may be used in a large number of environments, including commercial, professional, and individual.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: September 5, 2006
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Rosann Marie Kaylor, Difei Yang, Zdravko Savov Atanassov, Michael Eugene Knotts
  • Patent number: 7098041
    Abstract: An analyzer useful in determining the presence of an analyte using a diffraction based sensing device and methods and systems using this device. The present invention may be used with a variety of different diffraction-based diagnostic methods and systems. The analyzer enhances the accuracy and/or usefulness of these devices in detecting analytes, while providing more ease-of-use and convenience to the user. The analyzer may include a light source, a photodiode, a microprocessor and a display system for informing the user of the result. Other features include mirrors, lenses, a sample holder, and a mask for blocking out some light. The analyzer and related method and system may be used in a large number of environments, including commercial, professional, and individual.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: August 29, 2006
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Rosann Marie Kaylor, Difei Yang, Zdravko Savov Atanassov, Michael Eugene Knotts
  • Publication number: 20060189857
    Abstract: The present invention relates to a system and method for monitoring or treating a health condition. The method can include accessing a biological fluid, evaluating an analyte in the fluid, presenting a measurement parameter based on the evaluation, and/or administering a treatment based on the evaluation. The measurement parameter can prompt administering a treatment. The system can include a fluid handling device, a display and/or alert device, and/or an administration device. This abstract is provided for searching purposes only and is not meant for construing the claims.
    Type: Application
    Filed: April 27, 2006
    Publication date: August 24, 2006
    Inventors: Mark Faupel, Raulee Marcus, Alan Smith, Difei Yang
  • Publication number: 20060160245
    Abstract: An analyzer useful in determining the presence of an analyte using a diffraction based sensing device and methods and systems using this device. The present invention may be used with a variety of different diffraction-based diagnostic methods and systems. The analyzer enhances the accuracy and/or usefulness of these devices in detecting analytes, while providing more ease-of-use and convenience to the user. The analyzer may include a light source, a photodiode, a microprocessor and a display system for informing the user of the result. Other features include mirrors, lenses, a sample holder, and a mask for blocking out some light. The analyzer and related method and system may be used in a large number of environments, including commercial, professional, and individual.
    Type: Application
    Filed: December 11, 2001
    Publication date: July 20, 2006
    Inventors: Rosann Kaylor, Difei Yang, Zdravko Atanassov, Michael Knotts
  • Publication number: 20040267100
    Abstract: The present invention relates to a system and method for monitoring or treating a health condition. The method can include accessing a biological fluid, evaluating an analyte in the fluid, presenting a measurement parameter based on the evaluation, and/or administering a treatment based on the evaluation. The measurement parameter can prompt administering a treatment. The system can include a fluid handling device, a display and/or alert device, and/or an administration device. This abstract is provided for searching purposes only and is not meant for construing the claims.
    Type: Application
    Filed: July 23, 2004
    Publication date: December 30, 2004
    Inventors: Mark Faupel, Raulee Marcus, Alan Smith, Difei Yang
  • Publication number: 20030119202
    Abstract: An optical reflectance kit including a reading device and membrane test strip is disclosed for conducting a lateral flow assay. The reading device is portable. Assays may be conducted on bodily fluids to detect with high sensitivity the presence of certain hormones, glucose, or other bodily fluids of interest. Membrane test strips may receive a test fluid or test sample containing an analyte to be detected. The membrane test strips may be inserted directly into a receiving port of a reading device. Shielding stray light from the receiving port improves sensitivity and reduces the entry of stray or ambient light into the reading device. The reading device also includes one or more sensors capable of detecting the intensity of reflected electromagnetic radiation.
    Type: Application
    Filed: December 24, 2001
    Publication date: June 26, 2003
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Rosann Kaylor, Difei Yang, Michael Knotts
  • Publication number: 20030107740
    Abstract: An analyzer useful in determining the presence of an analyte using a diffraction based sensing device and methods and systems using this device. The present invention may be used with a variety of different diffraction-based diagnostic methods and systems. The analyzer enhances the accuracy and/or usefulness of these devices in detecting analytes, while providing more ease-of-use and convenience to the user. The analyzer may include a light source, a photodiode, a microprocessor and a display system for informing the user of the result. Other features include mirrors, lenses, a sample holder, and a mask for blocking out some light. The analyzer and related method and system may be used in a large number of environments, including commercial, professional, and individual.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 12, 2003
    Inventors: Rosann Marie Kaylor, Difei Yang, Zdravko Savov Atanassov, Michael Eugene Knotts
  • Patent number: 6530915
    Abstract: A photothermal structure designed for the uniform application of a photothermal material, such as, for example, a dye or a pigment, to a tissue, e.g., the stratum corneum. In one embodiment, the photothermal structure comprises photothermal material combined with a carrier, such as, for example, an adhesive or an ink, and the resulting combination is applied to a substrate, such as, for example, an inert polymeric substrate to form a photothermal structure. In another embodiment, the photothermal structure comprises photothermal material incorporated into a film-forming polymeric material.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: March 11, 2003
    Assignees: SpectRx, Inc., Altea Technologies, Inc.
    Inventors: Jonathan A. Eppstein, Michael R. Hatch, Difei Yang
  • Publication number: 20020169394
    Abstract: An integrated device (100, 200, 300, 400, 600, 1000) for harvesting a biological fluid from the tissue and analysis of the biological fluid. The device comprises a layer having a porating element disposed thereon to form at least one opening in the tissue. Biological fluid is harvested from the opening of the tissue and placed in contact with a sensor incorporated in the integrated device. The sensor is responsive to the biological fluid to provide an indication of a characteristic of the biological fluid, such as the concentration of an analyte in interstitial fluid. The porating element may comprise one or more heat conducting elements that are either optically or electrically heated, or one or more mechanical porating elements.
    Type: Application
    Filed: February 21, 2002
    Publication date: November 14, 2002
    Inventors: Jonathan A. Eppstein, Mark A. Samuels, Michael R. Hatch, Difei Yang
  • Patent number: 6142939
    Abstract: A method of enhancing the permeability of the skin to an analyte for diagnostic purposes or to a drug for therapeutic purposes is described utilizing microporation and optionally sonic energy and a chemical enhancer. If selected, the sonic energy may be modulated by means of frequency modulation, amplitude modulation, phase modulation, and/or combinations thereof. Microporation is accomplished by (a) ablating the stratum corneum by localized rapid heating of water such that such water is vaporized, thus eroding the cells; (b) puncturing the stratum corneum with a micro-lancet calibrated to form a micropore of up to about 1000 .mu.m in diameter; (c) ablating the stratum corneum by focusing a tightly focused beam of sonic energy onto the stratum corneum; (d) hydraulically puncturing the stratum corneum with a high pressure jet of fluid to form a micropore of up to about 1000 .mu.m in diameter, or (e) puncturing the stratum corneum with short pulses of electricity to form a micropore of up to about 1000 .mu.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: November 7, 2000
    Assignees: SpectRx, Inc., Altea Technologies, Inc.
    Inventors: Jonathan A. Eppstein, Michael R. Hatch, Difei Yang
  • Patent number: 5885211
    Abstract: A method of enhancing the permeability of the skin to an analyte for diagnostic purposes or to a drug for therapeutic purposes is described utilizing microporation and optionally sonic energy and a chemical enhancer. If selected, the sonic energy may be modulated by means of frequency modulation, amplitude modulation, phase modulation, and/or combinations thereof. Microporation is accomplished by (a) ablating the stratum corneum by localized rapid heating of water such that such water is vaporized, thus eroding the cells; (b) puncturing the stratum corneum with a micro-lancet calibrated to form a micropore of up to about 1000 .mu.m in diameter; (c) ablating the stratum corneum by focusing a tightly focused beam of sonic energy onto the stratum corneum; (d) hydraulically puncturing the stratum corneum with a high pressure jet of fluid to form a micropore of up to about 1000 .mu.m in diameter, or (e) puncturing the stratum corneum with short pulses of electricity to form a micropore of up to about 1000 .mu.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: March 23, 1999
    Assignees: Spectrix, Inc., Altea Technologies, Inc.
    Inventors: Jonathan A. Eppstein, Michael R. Hatch, Difei Yang