Patents by Inventor William L. Ozanich

William L. Ozanich 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 for sample preparation by solid phase extraction
    Patent number: 7666686
    Abstract: An method for sample preparation using solid phase extraction. Using an apparatus comprising a SPE cartridge and a sorbent-containing gas filter which contains a sorbent and is detachably connected to the SPE cartridge the gas used to dry the SPE cartridge is purified by passage through the gas filter, thereby preventing contamination of the SPE sorbent by airborne contaminants.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: February 23, 2010
    Assignee: United Chemical Technologies, Inc.
    Inventors: Donald L. Shelly, Jr., Phillip Spraker, William L. Ozanich, Jr., Michael J. Telepchak
  • Extraction material comprising treated silica and method for determination of gamma-hydroxybutyrate
    Patent number: 6156431
    Abstract: A treated silica composition particularly useful for solid phase extraction in chemical analysis, the silica having both phenyl and propylsulfonic acid functional groups; a cartridge for extraction which comprises the treated silica; a column for extraction which comprises the treated silica; and a method for solid phase extraction which uses the silica composition. A method for analysis of gamma hydroxybutyric acid is also disclosed which uses the treated silica.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: December 5, 2000
    Assignee: United Chemical Technologies, Inc.
    Inventors: Chester J. Kitchen, Thomas F. August, William L. Ozanich, Michael J. Telepchak