Patents Examined by Bradley Gerris
  • Reclamation of materials from photoflash cartridges
    Patent number: 4333737
    Abstract: A process is provided for reclaiming materials from photoflash cartridges ich are comprised of aluminum, barium nitrate and potassium perchlorate. The photoflash composition is dumped into heated water to dissolve barium nitrate and potassium perchlorate and the solution is then filtered to remove aluminum. Then the solution is cooled to precipitate the barium nitrate and the potassium perchlorate and the precipitated salts are then removed by filtering.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: June 8, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Francis E. Montgomery, James E. Short, Jr., William J. Weaver