Patents by Inventor Daniel J. Donovan

Daniel J. Donovan 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: 6194371
    Abstract: An alkaline emulsion detergent composition with improved phase stability, useful viscosity and excellent soil removal properties can comprise in an aqueous phase, an emulsion comprising a source of alkalinity, a nonionic surfactant blend, a water conditioning agent and an alkyl polyglucoside. The improved stable emulsions can be used in laundry applications or other soil removal processes. The compositions are typically prepared by forming an alkaline nonionic blend combining the blend with a water conditioning agent and the alkyl polyglucoside and shearing the resulting aqueous mixture to form an emulsion characterized by a preferred particle size and viscosity.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: February 27, 2001
    Assignee: Ecolab Inc.
    Inventors: Daniel J. Donovan, Lynne A. Olson
  • Patent number: 5480643
    Abstract: A stable, solid or semi-solid, antimicrobial composition is provided comprising a dialdehyde antimicrobial agent such as glutaraldehyde, and a carbohydrate such as a sugar or a polyol such as a sugar alcohol. The composition can be employed to preserve, sanitize, disinfect, or sterilize a contaminated surface or area. The composition can also be combined with an absorbing agent to produce a moisture absorbent antimicrobial composition which can be used to absorb and disinfect biological spills such as body fluid spills.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: January 2, 1996
    Assignee: Ecolab Inc.
    Inventors: Daniel J. Donovan, David D. McSherry, Dale L. Fredell
  • Patent number: 5158778
    Abstract: A stable, solid or semi-solid, antimicrobial composition is provided comprising a dialdehyde antimicrobial agent such as glutaraldehyde, and a carbohydrate such as a sugar or a polyol such as a sugar alcohol. The composition can be employed to preserve, sanitize, disinfect, or sterilize a contaminated surface or area. The composition can also be combined with an absorbing agent to produce a moisture absorbent antimicrobial composition which can be used to absorb and disinfect biological spills such as body fluid spills.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: October 27, 1992
    Assignee: Ecolab Inc.
    Inventors: Daniel J. Donovan, David D. McSherry, Dale L. Fredell
  • Patent number: 4971714
    Abstract: An improved softening agent dispersed in an aqueous detergent comprising droplets having an exterior organic phase containing a complexing agent and an inner aqueous phase comprising an acid or salt. The ability of the softening agent to remove hardness ions is improved by a novel complexing agent.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: November 20, 1990
    Assignee: Ecolab Inc.
    Inventors: Keith D. Lokkesmoe, Richard B. Greenwald, Daniel J. Donovan
  • Patent number: 4938893
    Abstract: A C.sub.1-4 alkyl-di C.sub.6-20 alkylamine oxide surfactant composition can be used in detersive systems. The amine oxide can be used in effective surfactant concentrations in aqueous alkaline solutions (pH about 7 or greater) producing an aqueous solution having halogen stability, reduced surface tension and low foaming properties. The surfactants have properties that are useful in detersive systems for hard surfaces, warewashing, laundry, clean-in-place, and other applications.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: July 3, 1990
    Assignee: Ecolab Inc.
    Inventors: James L. Copeland, Daniel J. Donovan
  • Patent number: 4921627
    Abstract: A C.sub.1-4 alkyl-di C.sub.6-20 alkylamine oxide surfactant composition can be used in detersive systems. The amine oxide can be used in effective surfactant concentrations in aqueous alkaline solutions (pH about 7 or greater) producing an aqueous solution having halogen stability, reduced surface tension and low foaming properties. The surfactants have properties that are useful in detersive systems for hard surfaces, warewashing, laundry, clean-in-place, and other applications.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: May 1, 1990
    Assignee: Ecolab Inc.
    Inventors: James L. Copeland, Daniel J. Donovan
  • Patent number: D539922
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: April 3, 2007
    Inventor: Daniel J. Donovan
  • Patent number: D541431
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: April 24, 2007
    Inventor: Daniel J. Donovan