Patents by Inventor Stephen Lewis Trokel

Stephen Lewis Trokel 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: 20200138787
    Abstract: A composition for opththalmic administration comprising a formaldehyde releasing agent, sodium bicarbonate, and an ophthalmically suitable carrier or excipient is provided.
    Type: Application
    Filed: May 20, 2019
    Publication date: May 7, 2020
    Applicant: The Trustees of Columbia University in the City of New York
    Inventors: David Choohyun Paik, Stephen Lewis Trokel
  • Patent number: 10292967
    Abstract: A composition for opththalmic administration comprising a formaldehyde releasing agent, sodium bicarbonate, and an ophthalmically suitable carrier or excipient is provided.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: May 21, 2019
    Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: David Choohyun Paik, Stephen Lewis Trokel
  • Publication number: 20190015388
    Abstract: A composition for opththalmic administration comprising a formaldehyde releasing agent, sodium bicarbonate, and an ophthalmically suitable carrier or excipient is provided.
    Type: Application
    Filed: September 17, 2018
    Publication date: January 17, 2019
    Applicant: The Trustees of Columbia University in the City of New York
    Inventors: David Choohyun Paik, Stephen Lewis Trokel
  • Patent number: 10105350
    Abstract: A method of cross-linking collagen present in a collagenous tissue comprising contacting the collagenous tissue with an amount of a formaldehyde releasing agent effective to crosslink the collagen is provided. A method of inhibiting loss of structural integrity of a collagenous tissue during transplantation-related transport comprising contacting the collagenous tissue with an amount of a formaldehyde releasing agent effective to inhibit loss of structural integrity of the collagenous tissue is also provided. A composition for ophthalmic administration comprising a formaldehyde releasing agent, sodium bicarbonate, and ophthalmically suitable carriers or excipients is also provided. Finally, a method of altering the refractive power of a cornea comprising contacting the cornea with a formaldehyde releasing agent so as to effect cross-linking in the cornea and thereby alter the refractive power of the cornea is provided.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: October 23, 2018
    Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: David Choohyun Paik, Stephen Lewis Trokel
  • Publication number: 20160374992
    Abstract: A method of cross-linking collagen present in a collagenous tissue comprising contacting the collagenous tissue with an amount of a formaldehyde releasing agent effective to crosslink the collagen is provided. A method of inhibiting loss of structural integrity of a collagenous tissue during transplantation-related transport comprising contacting the collagenous tissue with an amount of a formaldehyde releasing agent effective to inhibit loss of structural integrity of the collagenous tissue is also provided. A composition for ophthalmic administration comprising a formaldehyde releasing agent, sodium bicarbonate, and ophthalmically suitable carriers or excipients is also provided. Finally, a method of altering the refractive power of a cornea comprising contacting the cornea with a formaldehyde releasing agent so as to effect cross-linking in the cornea and thereby alter the refractive power of the cornea is provided.
    Type: Application
    Filed: March 12, 2015
    Publication date: December 29, 2016
    Applicant: The Trustees of Columbia University in the City of New York
    Inventors: David Choohyun Paik, Stephen Lewis Trokel
  • Patent number: 8466203
    Abstract: A method for stabilizing collagenous eye tissues by nitrite and nitroalcohol treatment. The topical stiffening agent contains sodium nitrite or a nitroalcohol in a buffered balanced salt solution and can be applied to the surface of the eye on a daily basis for a prolonged period. Application of the solution results in progressive stabilization of the corneal and scleral tissues through non-enzymatic cross-linking of collagen fibers. The compounds can penetrate into the corneal stroma without the need to remove the corneal epithelium. In addition, ultraviolet light is not needed to activate the cross-linking process. The resulting stabilization of corneal and scleral tissues can prevent future alterations in corneal curvature and has utility in diseases such as keratoconus, keratectasia, progressive myopia, and glaucoma.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: June 18, 2013
    Inventors: David Choohyun Paik, Stephen Lewis Trokel
  • Publication number: 20100173019
    Abstract: A method for stabilizing collagenous eye tissues by nitrite and nitroalcohol treatment. The topical stiffening agent contains sodium nitrite or a nitroalcohol in a buffered balanced salt solution and can be applied to the surface of the eye on a daily basis for a prolonged period. Application of the solution results in progressive stabilization of the corneal and scleral tissues through non-enzymatic cross-linking of collagen fibers. The compounds can penetrate into the corneal stroma without the need to remove the corneal epithelium. In addition, ultraviolet light is not needed to activate the cross-linking process. The resulting stabilization of corneal and scleral tissues can prevent future alterations in corneal curvature and has utility in diseases such as keratoconus, keratectasia, progressive myopia, and glaucoma.
    Type: Application
    Filed: December 6, 2007
    Publication date: July 8, 2010
    Inventors: David Choohyun Paik, Stephen Lewis Trokel