Patents by Inventor Howard Allen Ketelson

Howard Allen Ketelson 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: 20170160565
    Abstract: The present invention relates to improved contact lens products which not only have an improved and sustainable wettability. The contact lens product of the invention comprises a soft hydrogel contact lens immersed and autoclaved in a packaging solution including a polyoxyethylene-polyoxybutylene block copolymer and a high molecular weight copolymer of N-vinylpyrrolidone and at least one amino-containing vinylic monomer. The present invention also provides methods for making contact lens products of the invention.
    Type: Application
    Filed: November 15, 2016
    Publication date: June 8, 2017
    Inventors: Leroy Wainaina Muya, Howard Allen Ketelson
  • Publication number: 20170142964
    Abstract: This invention relates generally to disinfection and cleaning systems for medical devices. In a preferred embodiment, the invention relates to compositions, methods and articles for simultaneously cleaning and disinfecting contact lenses. The present invention is directed to ophthalmic compositions containing one or more block copolymers referred to as (polyoxyethylene)-(poly-oxybutylene) block copolymers (“PEO-PBO”). The invention is particularly directed to the use of PEO-PBO di-block copolymers as non-foaming wetting agents in peroxide-based compositions for disinfecting contact lenses.
    Type: Application
    Filed: February 1, 2017
    Publication date: May 25, 2017
    Inventors: Leroy Wainaina Muya, Howard Allen Ketelson
  • Publication number: 20170136057
    Abstract: The present invention relates to artificial tear compositions and ophthalmic compositions suitable for drug delivery. In one embodiment of the present invention, the compositions comprise a galactomannan polymer such as guar or hydroxypropyl guar, hyaluronic acid, and a cis-diol such as sorbitol. In a preferred embodiment, the compositions also comprise a borate compound.
    Type: Application
    Filed: February 1, 2017
    Publication date: May 18, 2017
    Inventors: James W. Davis, Howard Allen Ketelson, Elaine E. Campbell, David L. Meadows, Rekha Rangarajan
  • Publication number: 20170114300
    Abstract: The use of poly(oxyethylene)-poly(oxybutylene) block copolymers in pharmaceutical compositions useful for modifying the surfaces of contact lenses and other medical devices is disclosed. The present invention is based in-part on a discovery that this class of compounds is particularly efficient in wetting hydrophobic surfaces, such as the surfaces of silicone hydrogel contact lenses and other types of ophthalmic lenses. Such compounds are also useful for cleaning purposes. The use of the compounds as surfactants in various types of compositions for treating contact lenses therefore represents a preferred embodiment of the present invention.
    Type: Application
    Filed: January 5, 2017
    Publication date: April 27, 2017
    Inventors: Howard Allen Ketelson, Nathaniel D. McQueen
  • Patent number: 9591850
    Abstract: This invention relates generally to disinfection and cleaning systems for medical devices. In a preferred embodiment, the invention relates to compositions, methods and articles for simultaneously cleaning and disinfecting contact lenses. The present invention is directed to ophthalmic compositions containing one or more block copolymers referred to as (polyoxyethylene)-(poly-oxybutylene) block copolymers (“PEO-PBO”). The invention is particularly directed to the use of PEO-PBO di-block copolymers as non-foaming wetting agents in peroxide-based compositions for disinfecting contact lenses.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 14, 2017
    Assignee: NOVARTIS AG
    Inventors: Leroy Wainaina Muya, Howard Allen Ketelson
  • Patent number: 9574160
    Abstract: The use of poly(oxyethylene)-poly(oxybutylene) block copolymers in pharmaceutical compositions useful for modifying the surfaces of contact lenses and other medical devices is disclosed. The present invention is based in-part on a discovery that this class of compounds is particularly efficient in wetting hydrophobic surfaces, such as the surfaces of silicone hydrogel contact lenses and other types of ophthalmic lenses. Such compounds are also useful for cleaning purposes. The use of the compounds as surfactants in various types of compositions for treating contact lenses therefore represents a preferred embodiment of the present invention.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: February 21, 2017
    Assignee: ALCON RESEARCH, LTD.
    Inventors: Howard Allen Ketelson, Nathaniel D. McQueen
  • Patent number: 9521842
    Abstract: The use of poly(oxybutylene)-poly(oxyethylene)-poly(oxybutylene) block copolymers in pharmaceutical compositions useful for modifying the surfaces of contact lenses and other medical devices is disclosed. The present invention is based in-part on a discovery that this class of compounds is particularly efficient in wetting hydrophobic surfaces, such as the surfaces of silicone hydrogel contact lenses and other types of ophthalmic lenses, but do not induce foaming when used in conjunction with a peroxide-based contact lens disinfection regimen. Such compounds may also be useful for cleaning purposes. The use of the compounds as surfactants in peroxide-based compositions for disinfecting contact lenses therefore represents a preferred embodiment of the present invention.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: December 20, 2016
    Assignee: ALCON RESEARCH, LTD.
    Inventors: James W. Davis, Howard Allen Ketelson
  • Publication number: 20160338952
    Abstract: The present invention is directed to an ophthalmic emulsion. The emulsion has a unique combination of ingredients that promotes the stability of small oil droplets within the emulsion. The emulsion also includes a mucoadhesive polymer that aid in delivering a lipid to the ocular surface.
    Type: Application
    Filed: August 4, 2016
    Publication date: November 24, 2016
    Inventors: Howard Allen Ketelson, David L. Meadows
  • Publication number: 20160192646
    Abstract: The use of poly(oxybutylene)-poly(oxyethylene)-poly(oxybutylene) block copolymers in pharmaceutical compositions useful for modifying the surfaces of contact lenses and other medical devices is disclosed. The present invention is based in-part on a discovery that this class of compounds is particularly efficient in wetting hydrophobic surfaces, such as the surfaces of silicone hydrogel contact lenses and other types of ophthalmic lenses, but do not induce foaming when used in conjunction with a peroxide-based contact lens disinfection regimen. Such compounds may also be useful for cleaning purposes. The use of the compounds as surfactants in peroxide-based compositions for disinfecting contact lenses therefore represents a preferred embodiment of the present invention.
    Type: Application
    Filed: February 20, 2015
    Publication date: July 7, 2016
    Inventors: James W. Davis, Howard Allen Ketelson
  • Patent number: 9259472
    Abstract: The present invention relates to artificial tear formulations and ophthalmic formulations suitable for drug delivery. The formulations comprise galactomannans such as guar or hydroxypropyl guar and a borate source such as boric acid. The formulations further comprise a cis-diol such as sorbitol that interferes with the cross-linking of galactomannan and borate. Optionally, the formulations are substantially free of divalent cations.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: February 16, 2016
    Assignee: Alcon Research, Ltd.
    Inventors: Howard Allen Ketelson, David L. Meadows, James W. Davis
  • Patent number: 9175249
    Abstract: The present invention relates to compositions comprising ethyleneoxide butyleneoxide and a galactomannan such as guar. The compositions are particularly well suited for ophthalmic applications such as contact lens disinfection and rewetting. Methods for the treatment of dry eye using the compositions of the present invention are also contemplated.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: November 3, 2015
    Assignee: Alcon Research, Ltd.
    Inventors: James W. Davis, Howard Allen Ketelson, David L. Meadows
  • Patent number: 9040510
    Abstract: Methods of inhibiting the uptake of cationic biocides into medical devices such as contact lenses and implants are described. Methods of stabilizing emulsions containing cationic biocides are also described. In particular, the present invention provides for the use of polymers acting as labile anionic polyelectrolytes to reversibly bind cationic biocides. The reversible binding can reduce the deleterious effects of cationic biocides while maintaining biocidal activity. Preferred polymers include galactomannan and polyvinyl alcohol.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: May 26, 2015
    Assignee: Alcon Research, Ltd.
    Inventors: Howard Allen Ketelson, Ryan Desousa, Nissanke L. Dassanayake, Mary E. Luck
  • Patent number: 8999312
    Abstract: The use of poly(oxybutylene)-poly(oxyethylene)-poly(oxybutylene) block copolymers in pharmaceutical compositions useful, for modifying the surfaces of contact lenses and other medical devices is disclosed. The present invention is based in-part on a discovery that this class of compounds is particularly efficient in wetting hydrophobic surfaces, such as the surfaces of silicone hydrogel contact lenses and other types of ophthalmic lenses, but do not induce foaming when used in conjunction with a peroxide-based contact lens disinfection regimen. Such compounds may also be useful for cleaning purposes. The use of the compounds as surfactants in peroxide-based compositions for disinfecting contact lenses therefore represents a preferred embodiment of the present invention.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: April 7, 2015
    Assignee: Alcon Research, Ltd.
    Inventors: James W. Davis, Howard Allen Ketelson
  • Publication number: 20150093452
    Abstract: This invention relates generally to disinfection and cleaning systems for medical devices. In a preferred embodiment, the invention relates to compositions, methods and articles for simultaneously cleaning and disinfecting contact lenses. The present invention is directed to ophthalmic compositions containing one or more block copolymers referred to as (polyoxyethylene)-(poly-oxybutylene) block copolymers (“PEO-PBO”). The invention is particularly directed to the use of PEO-PBO di-block copolymers as non-foaming wetting agents in peroxide-based compositions for disinfecting contact lenses.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 2, 2015
    Inventors: Leroy Wainaina Muya, Howard Allen Ketelson
  • Publication number: 20140364422
    Abstract: The present invention is an aqueous pharmaceutical composition that includes an ionized therapeutic agent, an ionic component and guar gum. The guar gum is present in the composition a concentration sufficient to limit interactions between the ionized therapeutic agent and the ionic component thereby imparting stability to the composition. The composition is preferably at or near physiologic pH. The aqueous pharmaceutical composition has been found particularly useful as an aqueous ophthalmic, otic or nasal composition. The pharmaceutical composition, due to its characteristics, is particularly suitable as an ophthalmic composition.
    Type: Application
    Filed: August 25, 2014
    Publication date: December 11, 2014
    Inventors: David L. Meadows, Howard Allen Ketelson, Jang-Shing Chiou, James W. Davis
  • Patent number: 8846641
    Abstract: The present invention relates to viscosity stabilized ophthalmic formulations and ophthalmic formulations suitable for drug delivery. The formulations comprise galactomannans such as guar or hydroxypropyl guar and a borate source such as boric acid. The formulations further comprise a diol alcohol such as sorbitol and, optionally, a pharmaceutically acceptable divalent cation salt such as magnesium chloride.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: September 30, 2014
    Assignee: Alcon Research, Ltd.
    Inventors: Howard Allen Ketelson, James W. Davis, David L. Meadows
  • Publication number: 20140161760
    Abstract: The present invention relates to artificial tear formulations and ophthalmic formulations suitable for drug delivery. The formulations comprise galactomannans such as guar or hydroxypropyl guar and a borate source such as boric acid. The formulations further comprise a cis-diol such as sorbitol that interferes with the cross-linking of galactomannan and borate. Optionally, the formulations are substantially free of divalent cations.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: Alcon Research, Ltd.
    Inventors: Howard Allen Ketelson, David L. Meadows, James W. Davis
  • Patent number: 8685945
    Abstract: The present invention relates to artificial tear formulations and ophthalmic formulations suitable for drug delivery. The formulations comprise galactomannans such as guar or hydroxypropyl guar and a borate source such as boric acid. The formulations further comprise a cis-diol such as sorbitol that interferes with the cross-linking of galactomannan and borate. Optionally, the formulations are substantially free of divalent cations.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 1, 2014
    Assignee: Alcon Research, Ltd.
    Inventors: Howard Allen Ketelson, James W. Davis, David L. Meadows
  • Publication number: 20130330430
    Abstract: The present invention relates to processes for purifying guar comprising combining borate and guar in an aqueous solution and treating the aqueous solution with an organic solvent to induce precipitation of purified guar. Another embodiment of the present invention is directed to ophthalmic formulations comprising purified guar produced by the processes described.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: Alcon Research, Ltd.
    Inventors: James W. Davis, Howard Allen Ketelson, David L. Meadows, John C. Baker
  • Publication number: 20130296264
    Abstract: The present invention relates to artificial tear compositions and ophthalmic compositions suitable for drug delivery. In one embodiment of the present invention, the compositions comprise a galactomannan polymer such as guar or hydroxypropyl guar, hyaluronic acid, and a cis-diol such as sorbitol. In a preferred embodiment, the compositions also comprise a borate compound.
    Type: Application
    Filed: May 3, 2013
    Publication date: November 7, 2013
    Applicant: ALCON RESEARCH, LTD.
    Inventors: James W. Davis, Howard Allen Ketelson, Elaine E. Campbell, David L. Meadows, Rekha Rangarajan