Patents by Inventor Kerry L. Markwardt

Kerry L. Markwardt 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: 20140228430
    Abstract: The topical ophthalmic use of 5,6,7-trihydroxyheptanoic acid and analogs for the acceleration of corneal wound healing in humans, is disclosed.
    Type: Application
    Filed: January 16, 2014
    Publication date: August 14, 2014
    Applicant: Alcon Research, Ltd.
    Inventors: Daniel A. Gamache, Mark R. Hellberg, Peter G. Klimko, Kerry L. Markwardt, John M. Yanni, Eric C. Carlson
  • Patent number: 8529938
    Abstract: An improved viscoelastic composition useful in the performance of ophthalmic surgical procedures and especially cataract procedures is disclosed. The embodiments of the composition comprise combinations of sodium hyaluronate and chondroitin sulfate and exhibit an improved rheological profile.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: September 10, 2013
    Assignee: Alcon Research, Ltd.
    Inventors: Masoud R. Jafari, Kerry L. Markwardt, Uday Doshi
  • Publication number: 20110207809
    Abstract: The topical ophthalmic use of 5,6,7-trihydroxyheptanoic acid and analogs for the acceleration of corneal wound healing in humans, is disclosed.
    Type: Application
    Filed: February 25, 2011
    Publication date: August 25, 2011
    Applicant: ALCON RESEARCH, LTD.
    Inventors: Eric C. Carlson, Daniel A. Gamache, Mark R. Hellberg, Peter G. Klimko, Kerry L. Markwardt, John M. Yanni
  • Publication number: 20110015151
    Abstract: An improved viscoelastic composition useful in the performance of ophthalmic surgical procedures and especially cataract procedures is disclosed. The embodiments of the composition comprise combinations of sodium hyaluronate and chondroitin sulfate and exhibit an improved rheological profile.
    Type: Application
    Filed: September 21, 2010
    Publication date: January 20, 2011
    Applicant: ALCON, INC.
    Inventors: Masoud R. Jafari, Kerry L. Markwardt, Uday Doshi
  • Patent number: 7820194
    Abstract: An improved viscoelastic composition useful in the performance of ophthalmic surgical procedures and especially cataract procedures is disclosed. The embodiments of the composition comprise combinations of sodium hyaluronate and chondroitin sulfate and exhibit an improved rheological profile.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: October 26, 2010
    Assignee: Alcon, Inc.
    Inventors: Masoud R. Jafari, Kerry L. Markwardt, Uday Doshi
  • Publication number: 20090258955
    Abstract: Improved intraocular irrigating solutions are described comprising a cellulose derivative such as hydroxypropylmethylcellulose. In addition, certain solutions of the present invention comprise glutathione and dextrose. The solutions have enhanced viscosities that reduce the risk of damage to intraocular tissues during intraocular surgical procedures by reducing the turbulence of the solutions and dampening the movement of tissue fragments and air bubbles. The solutions preferably also have modified surface tensions that more closely resemble the surface tension of the aqueous humor.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 15, 2009
    Applicant: ALCON, INC.
    Inventors: Mandar V. Shah, Mikhail Boukhny, William H. Garner, Kerry L. Markwardt, Uday Doshi
  • Patent number: 7169755
    Abstract: An improved solution for use in the removal of cataractous lenses via liquefracture is described. The liquefracture solution contains a viscosity-enhancing agent to increase the residence time of the solution in the heating chamber of the liquefracture handpiece, thereby increasing the expulsion force of the solution from the handpiece (i.e., “pulse force”). An agent that releases gas when the liquefracture solution is heated in the handpiece may also be included in the solution, thereby also enhancing the pulse force of the solution upon expulsion from the handpiece. The solution preferably also contains a partially water-soluble agent that forms a temporarily insoluble precipitate when heated in a liquefracture handpiece. The precipitate acts as an abrasive agent when expelled with the liquefracture solution from the handpiece, thereby facilitating the cutting and disintegration of the cataractous lens material.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: January 30, 2007
    Assignee: Alcon, Inc.
    Inventors: Mandar V. Shah, Glenn Sussman, Donald M Cohen, Uday Doshi, Kerry L. Markwardt
  • Patent number: 7084130
    Abstract: Improved intraocular irrigating solutions are described. The solutions have enhanced viscosities that reduce the risk of damage to intraocular surgical procedures by reducing the turbulence of the solutions and dampening the movement of tissue fragments and air bubbles. The solutions preferably also have modified surface tensions that more closely resemble the surface tension of the aqueous humor.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: August 1, 2006
    Assignee: Alcon, Inc.
    Inventors: Mandar V. Shah, Mikhail Boukhny, William H. Garner, Kerry L. Markwardt, Uday Doshi
  • Patent number: 6919321
    Abstract: Ocular lubricant solutions are described. The solutions are adapted to facilitate the formation of a corneal flap during LASIK surgery. The solutions contain one or more viscosity enhancing agents (e.g., chondroitin sulfate) in a substantially salt-free, ophthalmically acceptable vehicle. Methods of lubricating the cornea to facilitate flap formation are also described.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: July 19, 2005
    Assignee: Alcon, Inc.
    Inventors: Pao-Li Wang, Uday Doshi, Masoud R. Jafari, Kerry L. Markwardt, Emerson Maddox
  • Patent number: 6878694
    Abstract: Compositions and methods for facilitating the formulation and closure of a corneal flap during LASIK surgery are described. The compositions and methods are based on the use of one or more viscosity-enhancing agents (e.g., chondroitin sulfate) to provide an ophthalmic irrigating solution with improved coating properties and prolonged dwelling time on the cornea, thereby providing lubrication for the microkeratome used to form the corneal flap, reduce corneal epithelial abrasions, and help to produce smooth and consistent cuts with the microkeratome blade.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: April 12, 2005
    Assignee: Alcon, Inc.
    Inventors: Uday Doshi, Kerry L. Markwardt, Pao-Li Wang, Emerson Maddox
  • Publication number: 20040101561
    Abstract: Systems for performing surgery, especially ophthalmic surgery, utilizing multiple viscoelastic agents with differing physicochemical properties are disclosed. The systems enable the skilled surgeon to perform certain steps of a surgical procedure with viscoelastic agents that are particularly well suited for such steps.
    Type: Application
    Filed: March 28, 2003
    Publication date: May 27, 2004
    Inventors: Masoud R. Jafari, Uday Doshi, Kerry L. Markwardt
  • Publication number: 20040033960
    Abstract: Compositions and methods for facilitating the formulation and closure of a corneal flap during LASIK surgery are described. The compositions and methods are based on the use of one or more viscosity-enhancing agents (e.g., chondroitin sulfate) to provide an ophthalmic irrigating solution with improved coating properties and prolonged dwelling time on the cornea, thereby providing lubrication for the microkeratome used to form the corneal flap, reduce corneal epithelial abrasions, and help to produce smooth and consistent cuts with the microkeratome blade.
    Type: Application
    Filed: May 19, 2003
    Publication date: February 19, 2004
    Inventors: Uday Doshi, Kerry L. Markwardt, Pao-Li Wang, Emerson Maddox
  • Publication number: 20040009893
    Abstract: Ocular lubricant solutions are described. The solutions are adapted to facilitate the formation of a corneal flap during LASIK surgery. The solutions contain one or more viscosity enhancing agents (e.g., chondroitin sulfate) in a substantially salt-free, ophthalmically acceptable vehicle. Methods of lubricating the cornea to facilitate flap formation are also described.
    Type: Application
    Filed: May 19, 2003
    Publication date: January 15, 2004
    Inventors: Pao-Li Wang, Uday Doshi, Masoud R. Jafari, Kerry L. Markwardt, Emerson Maddox
  • Publication number: 20030109424
    Abstract: Improved intraocular irrigating solutions are described. The solutions have enhanced viscosities that reduce the risk of damage to intraocular tissues during intraocular surgical procedures by reducing the turbulence of the solutions and dampening the movement of tissue fragments and air bubbles. The solutions preferably also have modified surface tensions that more closely resemble the surface tension of the aqueous humor.
    Type: Application
    Filed: September 30, 2002
    Publication date: June 12, 2003
    Inventors: Mandar V. Shah, Mikhail Boukhny, William H. Garner, Kerry L. Markwardt, Uday Doshi
  • Patent number: 6486138
    Abstract: The present invention is directed to ophthalmic compositions containing a gelling amount of a combination of galactomannan polysaccharides and borates. The compositions gel or partially gel upon administration to the eye. The present invention also discloses methods of topical ophthalmic administration of the compositions to the eye.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: November 26, 2002
    Assignee: Alcon Manufacturing, Ltd.
    Inventors: Bahram Asgharian, Gerald Cagle, Mandar V. Shah, Kerry L. Markwardt
  • Patent number: 6261547
    Abstract: Ophthalmic drug delivery vehicles which are administrable as a liquid and which gel upon contact with the eye are disclosed. The vehicles contain xanthan gum and an ophthalmically acceptable anesthetic agent.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 17, 2001
    Assignee: Alcon Manufacturing, Ltd.
    Inventors: Rajan Bawa, Rex E. Hall, Bhagwati P. Kabra, James E. Teague, Gerald D. Cagle, Kerry L. Markwardt, Mandar V. Shah