Patents Assigned to Montana Sulphur & Chemical Company
  • Publication number: 20020184933
    Abstract: Applying a polyhydric alcohol anti-dust agent, such as glycerol, to inorganic particulate materials reduces the formation of dust during processing and handling. The anti-dust agent is particularly effective for reducing dust formation in fertilizers such as disintegrating sulfur fertilizer (DSF), without interfering with the useful disintegration or other useful properties of the fertilizer.
    Type: Application
    Filed: April 30, 2001
    Publication date: December 12, 2002
    Applicant: Montana Sulphur & Chemical Company
    Inventors: Fred S. Bell, Donald G. Zink
  • Patent number: 6491736
    Abstract: Applying a polyhydric alcohol anti-dust agent, such as glycerol, to inorganic particulate materials reduces the formation of dust during processing and handling. The anti-dust agent is particularly effective for reducing dust formation in fertilizers such as disintegrating sulfur fertilizer (DSF), without interfering with the useful disintegration or other useful properties of the fertilizer.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: December 10, 2002
    Assignee: Montana Sulphur & Chemical Company
    Inventors: Fred S. Bell, Donald G. Zink
  • Patent number: 5386845
    Abstract: A tube well extends through a fluid containment compartment and is secured at both ends thereof to the compartment shell. Both ends of the well communicate with respective shell openings. Compartment fittings and/or equipment are positioned in the tube and are accessible through at least one of the openings. Both openings can be sealed and the well pressurized, to prevent pressurized fluid in the compartment from leaking through the equipment and into the tube well.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: February 7, 1995
    Assignee: Montana Sulphur & Chemical Company
    Inventor: Donald L. Zink
  • Patent number: 5312012
    Abstract: A liquid transport apparatus including an elongated liquid vessel for transporting compressible liquids, such as LPG. One or more longitudinal conduits having lower solid surfaces in the vapor space of compressible liquid are positioned within the liquid vessel. The compressible liquid within the conduits dissipates or eliminates the water hammer pressure resulting from the impact and prevents the walls of the liquid vessel from failing. The conduits can be in the form of one or more longitudinal pipes in the upper vapor space of the vessel with rupture discs at one or both ends thereof. A plurality of spaced apertures can be formed along the pipes. Further, a longitudinal baffle can be secured inside the vessel beneath the vessel top wall. The baffle can be used with or without the pipes, and if used with the pipes, it is positioned directly beneath them.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: May 17, 1994
    Assignee: Montana Sulphur & Chemical Company
    Inventor: Donald L. Zink