Patents by Inventor Ralph W. Holliday

Ralph W. Holliday 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).

  • Method and apparatus for water treatment
    Patent number: 5766488
    Abstract: An apparatus for treating water includes a vertically extending contact vessel, wherein water is contacted with ozone, and a return vessel which contains a column of water of a sufficient height to drive water through downstream solids separation stages. Ozone is removed from the water and the rate of ozone injection is monitored and automatically adjusted so that no great amount of ozone remains in water entering the solids separation stages. The ozone is generated in elongated elements that are cooled by the process water and that are positioned to serve as a static mixer for such water.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: June 16, 1998
    Assignee: United States Filter Corporation
    Inventors: Stephen A. Uban, Richard C. Maxson, Ralph W. Holliday, Mark E. Watson
  • Method and apparatus for water treatment
    Patent number: 5514284
    Abstract: An apparatus for treating water includes a vertically extending contact vessel, wherein water is contacted with ozone, and a return vessel which contains a column of water of a sufficient height to drive water through downstream filtering stages. Ozone is removed from the water and the rate of ozone injection is monitored and automatically adjusted so that no great amount of ozone remains in water entering the filtering stages. The ozone is generated in elongated elements that are cooled by the process water and that are positioned to serve as a static mixer for such water.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: May 7, 1996
    Assignee: Wheelabrator Engineered Systems Inc.
    Inventors: Stephen A. Uban, Richard C. Maxson, Ralph W. Holliday, Mark E. Watson