Patents by Inventor Raymond E. Kerollis

Raymond E. Kerollis 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).

  • Selenium removal methods
    Patent number: 6090290
    Abstract: A method for removing selenium from waste water is disclosed comprising reducing selenium oxide with carbohydrazide in a solution comprised of the selenium oxide to form elemental selenium.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: July 18, 2000
    Assignee: Xerox Corporation
    Inventors: Donald J. Goodman, Raymond E. Kerollis, Albert B. Mindler, Bruce Bruns
  • Method for removing hydrogen sulfide from untreated water
    Patent number: 5269944
    Abstract: A method of treating untreated water containing hydrogen sulfide by adjusting the pH of the untreated water to a pH level of no greater than 6.0 and thereafter converting the hydrogen sulfide in the pH treated water to sulfuric acid while adjusting the pH of the water to a level sufficient to prevent the formation of elemental sulfur.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: December 14, 1993
    Assignee: International Process Technology, Inc.
    Inventors: Raymond E. Kerollis, Edgar R. Mowrey