Patents by Inventor Rhonda Kay Schulz

Rhonda Kay Schulz 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).

  • Patent number: 6673765
    Abstract: A process for preparing a homogeneous, solid cleaning composition that comprises a cleaning agent, and optionally an additive agent and a hardening agent is provided. The compositions are processed in a continuous mixing system at high shear, at or below the melting temperature of the ingredients. Preferably, the ingredients are processed in an extruder, and the mixture is extruded directly into a mold or other packaging system for dispensing the cleaning composition. The consistency of the composition ranges from that of a fused block solid to a malleable article. The cleaning compositions are useful for warewashing and cleaning hard surfaces, rinsing, sanitizing, deodorizing, laundry detergents, conveyor lubricants, and the like.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: January 6, 2004
    Assignee: Ecolab Inc.
    Inventors: Rhonda Kay Schulz, Helmut K. Maier
  • Patent number: 6060444
    Abstract: A process for preparing a homogeneous, solid cleaning composition that comprises a cleaning agent, and optionally an additive agent and a hardening agent. The compositions are processed in a continuous mixing system at high shear, at or below the melting temperature of the ingredients. Preferably, the ingredients are processed in an extruder, and the mixture is extruded directly into a mold or other packaging system for dispensing the cleaning composition. The consistency of the composition ranges from that of a fused block solid to a malleable article. The cleaning compositions are useful for warewashing and cleaning hard surfaces, rinsing, sanitizing, deodorizing, laundry detergents, conveyor lubricants, and the like.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: May 9, 2000
    Assignee: Ecolab Inc.
    Inventors: Rhonda Kay Schulz, Helmut K. Maier
  • Patent number: 5698513
    Abstract: The invention provides a process for preparing a homogeneous, urea-based, solid cleaning composition, without the application of heat from an external source to melt the urea. Cleaning compositions for use in warewashing and cleaning hard surfaces, rinsing, sanitizing, deodorizing, and the like, made by the method are also provided. Preferably, the ingredients are processed in an extruder, and the mixture is extruded directly into a mold or other packaging system for dispensing the detergent. The consistency of the composition ranges from that of a fused solid block to a malleable article.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: December 16, 1997
    Assignee: Ecolab Inc.
    Inventors: Rhonda Kay Schulz, Roger C. Zillmer, Helen B. Bailly
  • Patent number: 5674831
    Abstract: The invention provides a process for preparing a homogeneous, urea-based, solid cleaning composition, without the application of heat from an external source to melt the urea. Cleaning compositions for use in warewashing and cleaning hard surfaces, rinsing, sanitizing, deodorizing, and the like, made by the method are also provided. Preferably, the ingredients are processed in an extruder, and the mixture is extruded directly into a mold or other packaging system for dispensing the detergent. The consistency of the composition ranges from that of a fused solid block to a malleable article.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: October 7, 1997
    Assignee: Ecolab Inc.
    Inventors: Rhonda Kay Schulz, Roger C. Zillmer, Helen B. Bailly