Patents by Inventor Douglas E. Margevich

Douglas E. Margevich 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).

  • Clean-in-place method for cleaning solution delivery systemes/lines
    Patent number: 6679274
    Abstract: A method is taught for cleaning photographic chemistry product fouling, including a proteinaceous portion and a non-proteinaceous portion from a liquid delivery system. The method comprises the steps of displacing resident product solution in the piping with water, hydrodynamically cleaning the piping system using two-phase flow a first time, chemically cleaning the piping system with an aqueous bleach solution to remove the proteinaceous portion of the photographic chemistry product fouling, chemically cleaning the piping system with a functionalized ethyl acetate solvent to remove the non-proteinaceous portion of the photographic chemistry product fouling, and hydrodynamically cleaning the piping system using two-phase flow a second time after the chemical cleaning steps to remove remaining residue. Preferably, after the second hydrodynamic two-phase flow cleaning step, the delivery system is subjected to a high purity water rinse.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: January 20, 2004
    Assignee: Eastman Kodak Company
    Inventors: David W. Gruszczynski, Douglas E. Margevich, Mark Fornalik
  • Clean-in-place method for cleaning solution delivery systemes/lines
    Publication number: 20030062066
    Abstract: A method is taught for cleaning photographic chemistry product fouling, including a proteinaceous portion and a non-proteinaceous portion from a liquid delivery system. The method comprises the steps of displacing resident product solution in the piping with water, hydrodynamically cleaning the piping system using two-phase flow a first time, chemically cleaning the piping system with an aqueous bleach solution to remove the proteinaceous portion of the photographic chemistry product fouling, chemically cleaning the piping system with a functionalized ethyl acetate solvent to remove the non-proteinaceous portion of the photographic chemistry product fouling, and hydrodynamically cleaning the piping system using two-phase flow a second time after the chemical cleaning steps to remove remaining residue. Preferably, after the second hydrodynamic two-phase flow cleaning step, the delivery system is subjected to a high purity water rinse.
    Type: Application
    Filed: August 10, 2001
    Publication date: April 3, 2003
    Applicant: Eastman Kodak Company
    Inventors: David W. Gruszczynski, Douglas E. Margevich, Mark Fornalik