Patents by Inventor Charles Hayes Powell

Charles Hayes Powell 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: 9439990
    Abstract: A container for disinfecting and storing a contact lens comprising a container having a nonporous but oxygen-permeable, water-impermeable liner that forms a continuous barrier layer to allow oxygen to escape but prevent water from escaping when the container becomes pressurized, such as when an oxidative disinfectant is neutralized catalytically to generate free oxygen (O2). A rigid shell against which the liner is disposed is porous to oxygen and includes a main body and a cap removably attachable to an upper rim of the main body. The container also may have a lens holder for supporting a contact lens. The liner may be on the inside of the shell, or vice versa. The liner may be on the inside of the cap which has openings through which the liner expands when the container becomes pressurized as an indicator that the disinfecting process is underway.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: September 13, 2016
    Assignee: Abbott Medical Optics Inc.
    Inventors: Charles Hayes Powell, Daniel John Urbaniak
  • Publication number: 20150030511
    Abstract: A container for disinfecting and storing a contact lens comprising a container having a nonporous but oxygen-permeable, water-impermeable liner that forms a continuous barrier layer to allow oxygen to escape but prevent water from escaping when the container becomes pressurized, such as when an oxidative disinfectant is neutralized catalytically to generate free oxygen (O2). A rigid shell against which the liner is disposed is porous to oxygen and includes a main body and a cap removably attachable to an upper rim of the main body. The container also may have a lens holder for supporting a contact lens. The liner may be on the inside of the shell, or vice versa. The liner may be on the inside of the cap which has openings through which the liner expands when the container becomes pressurized as an indicator that the disinfecting process is underway.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 29, 2015
    Applicant: Abbott Medical Optics Inc.
    Inventors: Charles Hayes Powell, Daniel John Urbaniak
  • Patent number: 5854303
    Abstract: A polymeric material incorporating a polyvalent cation chelating agent in an amount effective to inhibit the growth of an ocular pathogen, particularly a protozoan, can be used to produce eye care products such as contact lens cases and containers for containing eye care solutions and contact lenses.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: December 29, 1998
    Assignee: Allergan Sales, Inc.
    Inventors: Charles Hayes Powell, David C. Rupp
  • Patent number: 5739178
    Abstract: A polymeric material incorporating a polyvalent cation chelating agent in an amount effective to inhibit the growth of an ocular pathogen, particularly a protozoan, can be used to produce eye care products such as contact lens cases and containers for containing eye care solutions and contact lenses.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: April 14, 1998
    Assignee: Allergan
    Inventors: Charles Hayes Powell, David C. Rupp