Patents by Inventor Leroy Wainaina Muya

Leroy Wainaina Muya 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: 10449740
    Abstract: The present invention generally relates to a method for producing silicone hydrogel contact lenses having a stable lubricious coating thereon without involving use of organic solvent in post-curing processes.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: October 22, 2019
    Assignee: Novartis AG
    Inventors: Xinming Qian, Jared Nelson, Robert Carey Tucker, Steve Yun Zhang, Daqing Wu, Leroy Wainaina Muya, Dharmesh Patel, Zach Munoz, Yongxing Qiu, Chung-Yuan Chiang, Ritu Shrestha, Kelly Kayi Tallau
  • Patent number: 10151936
    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: Grant
    Filed: October 25, 2017
    Date of Patent: December 11, 2018
    Assignee: Novartis AG
    Inventors: Leroy Wainaina Muya, Howard Allen Ketelson
  • Publication number: 20180059436
    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: October 25, 2017
    Publication date: March 1, 2018
    Inventors: Leroy Wainaina Muya, Howard Allen Ketelson
  • Patent number: 9829723
    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: Grant
    Filed: November 15, 2016
    Date of Patent: November 28, 2017
    Assignee: Novartis AG
    Inventors: Leroy Wainaina Muya, Howard Allen Ketelson
  • Publication number: 20170165932
    Abstract: The present invention generally relates to a method for producing silicone hydrogel contact lenses having a stable lubricious coating thereon without involving use of organic solvent in post-curing processes.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 15, 2017
    Inventors: Xinming Qian, Jared Nelson, Robert Carey Tucker, Steve Yun Zhang, Daqing Wu, Leroy Wainaina Muya, Dharmesh Patel, Zach Munoz, Yongxing Qiu, Chung-Yuan Chiang, Ritu Shrestha, Kelly Kayi Tallau
  • 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
  • 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
  • Publication number: 20160136320
    Abstract: The present invention provides an aqueous lens care solution for disinfecting and/or cleaning contact lenses in an ozone-based lens care system. The lens care solution of the invention is a hypotonic solution, has an osmolality at about 25° C. of from about 200 mOsm/kg to about 260 mOsm/kg, and comprises at least one relatively-ozone-inert buffering agent selected from the group consisting of boric acid, sodium tetraborate, potassium tetraborate, acetic acid, sodium acetate, potassium acetate, and a mixture thereof. The aqueous lens care solution is compatible with ozone electrolytically generated in an ozone-based lens care system as characterized by comprising about 30 mM or less of chloride ion and less than about 10 mM of one or more ozone-interfering buffering agents.
    Type: Application
    Filed: June 24, 2014
    Publication date: May 19, 2016
    Inventors: Robert Carey TUCKER, John Dallas PRUITT, Leroy Wainaina MUYA
  • 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: 20110114517
    Abstract: The present invention relates to a hydrogen peroxide solution for disinfecting contact lenses. The hydrogen peroxide solution contains an effective amount of a homopolymer or copolymer of vinylpyrrolidone to an increased residual hydrogen peroxide concentration when in the presence of a catalyst, thereby prolonging the effective life of the solution and providing greater comfort to the weather.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 19, 2011
    Inventors: Kasey Jon Minick, Manal M. Gabriel, Leroy Wainaina Muya, Walter Lee Nash, George Edward Minno