Patents by Inventor Steve J. MacDONALD

Steve J. MacDONALD 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).

  • Solid phase extraction disk and method of manufacture
    Patent number: 8528747
    Abstract: Solid phase extraction (SPE) disks may be manufactured by providing a suspension comprising glass microfibers and a suspension comprising one or more sorbents and forming a disk by combining the suspensions or by layering the suspensions. This may be followed by a drying procedure to create the finished disk. A disk mold including a collar and plug may be used to establish the size and shape of the disk. Examples of various constructions and processes for forming the disks are provided.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: September 10, 2013
    Assignee: Horizon Technologies, Inc.
    Inventors: Kevin Dinnean, Robert S. Johnson, Steve J. MacDonald
  • Solid Phase Extraction Disk And Method of Manufacture
    Publication number: 20100200491
    Abstract: Solid phase extraction (SPE) disks may be manufactured by providing a suspension comprising glass microfibers and a suspension comprising one or more sorbents and forming a disk by combining the suspensions or by layering the suspensions. This may be followed by a drying procedure to create the finished disk. A disk mold including a collar and plug may be used to establish the size and shape of the disk. Examples of various constructions and processes for forming the disks are provided.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 12, 2010
    Applicant: HORIZON TECHNOLOGY, INC.
    Inventors: Kevin DINNEAN, Robert S. JOHNSON, Steve J. MacDONALD