Patents Assigned to Bulldog Technologies U.S.A., Inc.
  • Alkaline phosphate-activated clay/zeolite catalysts
    Patent number: 6103949
    Abstract: Zeolite/clay/phosphate catalysts can be prepared by a process wherein a composition of zeolite-clay-phosphate is brought to a pH level of about 7.0 to about 14.0. The resulting slurry is then age reacted for about 0.5 to about 24 hours. Thereafter the slurry is dried to produce a zeolite/clay/phosphate catalyst particles that are particularly characterized by their high levels of zeolite stability.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: August 15, 2000
    Assignee: Bulldog Technologies U.S.A., Inc.
    Inventors: Edward J. Demmel, Albert A. Vierheilig
  • SO.sub.x Additive systems based upon use of multiple particle species
    Patent number: 6074984
    Abstract: The useful life of SO.sub.X additives having a SO.sub.2 .fwdarw.SO.sub.3 oxidation catalyst component and a SO.sub.3 absorption component can be extended by employing each of these components as separate and distinct physical particles, pellets, etc.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: June 13, 2000
    Assignee: Bulldog Technologies U.S.A., Inc.
    Inventors: Edward J. Demmel, deceased, Albert A. Vierheilig, Regis B. Lippert
  • SO.sub.x additive systems based upon use of multiple particle species
    Patent number: 6048821
    Abstract: The useful life of SO.sub.X additives having a SO.sub.2 .fwdarw.SO.sub.3 oxidation catalyst component and a SO.sub.3 absorption component can be extended by employing each of these components as separate and distinct physical particles, pellets, etc., with each component having large proportions of certain ingredients and having small proportions of certain other ingredients.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: April 11, 2000
    Assignee: Bulldog Technologies U.S.A., Inc.
    Inventors: Edward J. Demmel, Albert A. Vierheilig, Regis B. Lippert
  • Process for making, and use of, anionic clay materials
    Patent number: 6028023
    Abstract: Anionic clay compounds such as hydrotalcite-like compounds can be made by a process wherein a non-hydrotalcite-like compound (or a hydrotalcite-like compound) are heat treated and then hydrated to form hydrotalcite-like compounds having properties (e.g., increased hardness and/or density) that differ from those of hydrotalcite-like compounds made by prior art methods wherein non-hydrotalcite-like compounds (or hydrotalcite-like compounds) are not similarly heat treated and hydrated to form such hydrotalcite-like compounds.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: February 22, 2000
    Assignee: Bulldog Technologies U.S.A., Inc.
    Inventor: Albert A. Vierheilig
  • Alkaline phosphate-activated clay/zeolite catalysts
    Patent number: 5958818
    Abstract: Zeolite/clay/phosphate catalysts can be prepared by a process wherein a composition of zeolite-clay-phosphate is brought to a pH level of about 7.0 to about 14.0. The resulting slurry is then age reacted for about 0.5 to about 24 hours. Thereafter the slurry is dried to produce a zeolite/clay/phosphate catalyst particles that are particularly characterized by their high levels of zeolite stability.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: September 28, 1999
    Assignee: Bulldog Technologies U.S.A., Inc.
    Inventors: Edward J. Demmel, Albert A. Vierheilig
  • Valve device for introducing particulate materials into a high pressure air stream
    Patent number: 5810045
    Abstract: A valve for introducing particulate materials into a high pressure gas stream and for preventing said particulate materials from invading those interior regions of the valve having moving parts.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: September 22, 1998
    Assignee: Bulldog Technologies U.S.A., Inc.
    Inventor: Martin Evans