Patents by Inventor Denny E. Daugherty

Denny E. Daugherty 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).

  • Method of making paste detergent and product produced
    Patent number: 5061392
    Abstract: A method of forming a paste detergent composition includes forming two separate aqueous solutions. The first aqueous solution includes an effective concentration, generally 1 to 70% of potassium tripolyphosphate. The second solution is an aqueous solution of a water soluble sodium based detergent builder preferably sodium hydroxide. These are combined and due to the effective concentrations of the potassium tripolyphosphate and the water soluble detergent builder, the viscosity of the formed detergent substantially increases relative to either of the viscosities of the first or second aqueous solutions. This provides a unique method of forming paste detergent compositions particularly for use in warewashing machines.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: October 29, 1991
    Assignee: DuBois Chemicals, Inc.
    Inventors: Anthony J. Bruegge, Denny E. Daugherty
  • Method of formulating high caustic paste dishwashing compositions made compositions thereby, wherein phosphate reversion is minimized
    Patent number: 5019290
    Abstract: A high caustic paste dishwashing detergent is formulated to avoid reversion of the polyphosphates. The composition which includes at least about 35% sodium hydroxide (solids) is formulated with up to 30% of a phosphate sequestering system. The phosphate sequestering system includes preferably equal proportions of tetra alkali metal pyrophosphate and alkali metal tripolyphosphate. The high percentage of pyrophosphate is added to further stabilize the phosphate system. The detergent composition also includes a low molecular weight polyacrylic acid, a phosphono alkyl tricarboxylic acid, colloidal silica and a gluconate and optionally a chlorine source and defoamer. Preferably the composition includes at least about 40% sodium hydroxide, 10% tetra sodium pyrophosphate and 10% sodium tripolyphosphate with the remainder formed from the polyacrylate, phosphono butane tricarboxylic acid, sodium gluconate, colloidal silica, Chloramine T and water.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: May 28, 1991
    Assignee: DuBois Chemicals, inc.
    Inventors: Anthony J. Bruegge, Denny E. Daugherty, Terrence J. Sabatelli
  • Stabilized dichlorodimethyl hydantoin
    Patent number: 4242216
    Abstract: Dichlorodimethyl hydantoin stabilized for use in alkaline detergent formulations by forming granules or briquettes of a minimum size and hardness.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: December 30, 1980
    Assignee: Chemed Corporation
    Inventors: Denny E. Daugherty, Edwin R. Loder, Gary L. Young
  • Slurried detergent and method
    Patent number: 4147650
    Abstract: The invention disclosed provides a new improved slurry detergent and to a method of using same. The slurry detergent may be formulated with alkali metal hydroxides and/or silicates, condensed phosphates, sodium hypochlorite and sodium polyacrylate, or the like. The new improved slurry is found to have significant advantages over both liquid detergents and powder detergents in dispensing as well as in use.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: April 3, 1979
    Assignee: Chemed Corporation
    Inventors: Philip M. Sabatelli, Denny E. Daugherty