Patents by Inventor David J. Keith

David J. Keith 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: 20240126038
    Abstract: A panel system includes a chassis holding one or more tray arrangements, which are each configured to receive one or more cassettes at two or more bays. The tray arrangements and cassettes cooperate to define a cassette sensor arrangement and a port occupancy sensor arrangement having separate interface points. The cassette sensor arrangement may include electronic memory storing physical layer information about the cassette. All active components of the port occupancy sensor arrangement are disposed on the tray while the electronic memories of the cassette sensor arrangement are stored on the cassettes.
    Type: Application
    Filed: October 23, 2023
    Publication date: April 18, 2024
    Inventors: Ryan Edward ENGE, Paula LOCKHART, Scott Martin KEITH, David Jan Irma VAN BAELEN, Jacob C. ANDERSON, Steven Walter KNOERNSCHILD, Brian J. FITZPATRICK, Pedro MALDONADO, Gary Federico GIBBS, James J. SOLHEID, Matthew J. HOLMBERG, Matthew Robert KIENER
  • Patent number: 8388941
    Abstract: The use of a borate/polyol and zinc system to enhance the antimicrobial activity of multi-dose pharmaceutical compositions is described. The compositions do not require a conventional anti-microbial preservative and therefore are referred to as being ‘self-preserved’. The compositions possess sufficient antimicrobial activity to satisfy the preservative efficacy requirements of the USP for aqueous ophthalmic compositions.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: March 5, 2013
    Assignee: Alcon Research, Ltd.
    Inventors: Masood A. Chowhan, David J. Keith
  • Publication number: 20100021562
    Abstract: The use of a borate/polyol and zinc system to enhance the antimicrobial activity of multi-dose pharmaceutical compositions is described. The compositions do not require a conventional anti-microbial preservative and therefore are referred to as being ‘self-preserved’. The compositions possess sufficient antimicrobial activity to satisfy the preservative efficacy requirements of the USP for aqueous ophthalmic compositions.
    Type: Application
    Filed: September 20, 2007
    Publication date: January 28, 2010
    Inventors: Masood A. Chowhan, David J. Keith
  • Publication number: 20100021561
    Abstract: The use of borate/amino alcohol/zinc systems to enhance the antimicrobial activity of multi-dose pharmaceutical compositions is described. The compositions do not require a conventional anti-microbial preservative and therefore are referred to as being “self-preserved”. The compositions possess sufficient antimicrobial activity to satisfy the preservative efficacy requirements of the USP for aqueous ophthalmic compositions.
    Type: Application
    Filed: September 20, 2007
    Publication date: January 28, 2010
    Inventors: Masood A. Chowhan, David J. Keith, Bahram Asgharian
  • Patent number: 4760423
    Abstract: A system for reducing hydrocarbon emissions from a high speed liquid reprography process. Hydrocarbon ladened vapors from the reprography process are directed through an activated charcoal bed. The bed is regenerated from time to time by a flow of controlled temperature regenerating air. Whereas the reprography process generates hydrocarbons at a highly fluctuating rate and mixed in large volumes of air, the carbon bed regeneration produces hydrocarbons at a controlled rate in a small volume of air. These hydrocarbons are removed by removal means which may be either a catalytic reactor or a condensation device.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: July 26, 1988
    Assignee: Savin Corporation
    Inventors: Bruce E. Holtje, David J. Keith, Ming L. Fe, James M. Halbert