Patents by Inventor Ashley J. Welch

Ashley J. Welch 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: 20140191140
    Abstract: Provided are methods, systems, and apparatus for altering a modulation transfer function of an imaging system. The described methods, systems and apparatus can be used to temporarily alter visual acuity of a subject.
    Type: Application
    Filed: February 24, 2014
    Publication date: July 10, 2014
    Applicant: Board of Regents, The University of Texas System
    Inventors: Ashley J. Welch, Rebecca L. Vincelette, Henry Grady Rylander, III, Thomas E. Milner
  • Patent number: 8657443
    Abstract: Provided are systems and methods to temporarily alter visual acuity of a subject. An example system includes a first light source configured to produce infrared light in an infrared wavelength spectrum for transient propagation into an eye of the subject and a second light source configured to produce visible light in a visible wavelength spectrum for transient propagation into the eye of the subject. The system further includes a transmission unit configured to propagate the infrared light and the visible light into the eye, wherein the light propagated into the eye temporarily alters visual acuity of the subject.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 25, 2014
    Assignee: Board of Regents, The University of Texas System
    Inventors: Ashley J. Welch, Rebecca L. Vincelette, Henry Grady Rylander, III, Thomas E. Milner
  • Publication number: 20130032024
    Abstract: Provided are systems and methods to temporarily alter visual acuity of a subject. An example system includes a first light source configured to produce infrared light in an infrared wavelength spectrum for transient propagation into an eye of the subject and a second light source configured to produce visible light in a visible wavelength spectrum for transient propagation into the eye of the subject. The system further includes a transmission unit configured to propagate the infrared light and the visible light into the eye, wherein the light propagated into the eye temporarily alters visual acuity of the subject.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 7, 2013
    Applicant: Board of Regents, The University of Texas System
    Inventors: Ashley J. Welch, Rebecca L. Vincelette, Henry Grady Rylander, III, Thomas E. Milner
  • Patent number: 8267518
    Abstract: Provided are systems operable to effect a temporary change in a modulation transfer function (MTF) of a target imaging system. The systems include a light source operable to produce light for transient propagation onto at least a portion of the target imaging system, a power source in operative communication with the light source and configured to effect the production of light from the light source, and a transmission unit in operative communication with the light source and configured to propagate the produced light onto at least a portion of the target imaging system. The propagated light is configured for absorbance by the portion of the target imaging system; the absorbance causes an increase in temperature and a change in a refractive index profile of at least the portion of the imaging system. The change in refractive index profile produces a temporary change in the MTF of the imaging system.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 18, 2012
    Assignee: The Board of Regents, The University of Texas System
    Inventors: Ashley J Welch, Rebecca L. Vincelette, Henry Grady Rylander, III, Thomas E. Milner
  • Publication number: 20110054445
    Abstract: Methods, systems, and apparatus for delivering drugs for treatment of eye disease are described. For example, the methods, systems, and apparatus can be optionally used to treat wet age-related macular degeneration. In some examples, an eye disease is treated by implanting a device comprising a sealed container into the diseased eye. A dosage of drug for treating the diseased eye is disposed within the sealed container. The dosage of the drug is selectively released from the sealed container of the implanted device into eye tissue. The released dosage treats the eye disease.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 3, 2011
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Henry Rylander, Ashley J. Welch, Raiyan Zaman
  • Publication number: 20100237258
    Abstract: Provided are methods, systems, and apparatus for altering a modulation transfer function of an imaging system. The described methods, systems and apparatus can be used to temporarily alter visual acuity of a subject.
    Type: Application
    Filed: January 22, 2010
    Publication date: September 23, 2010
    Applicant: Board of Regents, The University of Texas System
    Inventors: Ashley J. Welch, Rebecca L. Vincelette, Henry Grady Rylander, III, Thomas E. Milner
  • Patent number: 6942663
    Abstract: Methods for treating maladies such as cutaneous vascular lesions. A patient in need of vascular lesion treatment is identified. A hyperosmotic agent is administered to a region adjacent the lesion. Blood flow velocity is slowed within the region using the hyperosmotic agent, and the lesion is exposed to laser radiation.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: September 13, 2005
    Assignee: Board of Regents, The University of Texas System
    Inventors: Gracie Vargas, Jennifer K. Barton, Eric K. Chan, Thomas E. Milner, Ashley J. Welch
  • Publication number: 20040019120
    Abstract: Methods for treating maladies such as cutaneous vascular lesions. A patient in need of vascular lesion treatment is identified. A hyperosmotic agent is administered to a region adjacent the lesion. Blood flow velocity is slowed within the region using the hyperosmotic agent, and the lesion is exposed to laser radiation.
    Type: Application
    Filed: March 10, 2003
    Publication date: January 29, 2004
    Inventors: Gracie Vargas, Jennifer K. Barton, Eric K. Chan, Thomas E. Milner, Ashley J. Welch
  • Patent number: 6391049
    Abstract: A composition and method for a light activated composition for improved wound closure, is disclosed. The composition includes a biodegradable polymer that is impregnated with a solder that is biologically compatible and a chromophoric dye. The chromophoric dye enhances the amount of light energy that the composition absorbs.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: May 21, 2002
    Assignee: Board of Regents the University of Texas System
    Inventors: Karen M. McNally, Brian S. Sorg, Ashley J. Welch
  • Patent number: 6275726
    Abstract: A new process to increase light transmission in biological tissue has been developed. The technique involves temporarily replacing tissue water with a fluid that has a refractive index closer to that of inter/intra cellular components. Subsequently, the amount of index mis-match between these components and the fluid environment is temporarily decreased. This lowers the amount of random reflection and refraction which also reduces light scattering. In addition, the infrared absorption is reduced when the fluid has a lower absorption coefficient than water. Furthermore, this process is reversible; thus creating a transient window to enhance light transmission for therapeutic and/or diagnostic applications.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: August 14, 2001
    Assignee: Board of Regents, The University of Texas System
    Inventors: Eric K. Chan, Jennifer K. Barton, Ashley J. Welch