Patents by Inventor Mark G. Kramer

Mark G. Kramer 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).

  • Process for stabilizing metals in ash
    Patent number: 5403496
    Abstract: A process for stabilizing metals in ash to prevent leaching of the metals is disclosed. The pH of an aqueous slurry of ash is reduced to less than 5 in the presence of an iron salt. The pH-reduced slurry is then treated with an organo sulfur containing compound and an alkaline earth metal oxide or hydroxide in specific weight proportions relative to the iron salt and to each other.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: April 4, 1995
    Assignee: Drew Chemical Corporation
    Inventors: Mark G. Kramer, Kathleen A. Fix