Patents by Inventor Duane J. Reinhardt

Duane J. Reinhardt 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: 7056536
    Abstract: A non-corrosive, liquid, aqueous sterilant composition (as a concentrate or ready-to-use solution), which may be provided in two parts which are mixed prior to application, may comprise a peracid (in an equilibrium solution with an underlying carboxylic acid or mixtures of alkyl carboxylic acids and peroxide), inorganic buffering agent, and water. It has been found that the use of this simplified system, even in the absence of additional components which have been thought to be desirable for sterilants used on metal parts (e.g.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: June 6, 2006
    Assignee: Ecolab Inc.
    Inventors: Francis L. Richter, Duane J. Reinhardt, Sally K. Swart
  • Patent number: 6991685
    Abstract: The invention relates to a method of low temperature cleaning and applying an antimicrobial treatment to food and beverage plant equipment. In addition, the method includes carbon dioxide compatible chemistry. The method may be achieved through a multi-step method.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: January 31, 2006
    Assignee: Ecolab Inc.
    Inventors: Joseph I. Kravitz, Francis L. Richter, Duane J. Reinhardt, Gerald K. Wichmann
  • Patent number: 6953507
    Abstract: The invention relates to a method of low temperature cleaning and applying an antimicrobial treatment to food and beverage plant equipment. In addition, the method includes carbon dioxide compatible chemistry. The method may be achieved through a multi-step method.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: October 11, 2005
    Assignee: Ecolab Inc.
    Inventors: Joseph I. Kravitz, Francis L. Richter, Duane J. Reinhardt, Gerald K. Wichmann
  • Publication number: 20040182425
    Abstract: The invention relates to a method of low temperature cleaning and applying an antimicrobial treatment to food and beverage plant equipment. In addition, the method includes carbon dioxide compatible chemistry. The method may be achieved through a multi-step method.
    Type: Application
    Filed: March 21, 2003
    Publication date: September 23, 2004
    Applicant: Ecolab Inc.
    Inventors: Joseph I. Kravitz, Francis L. Richter, Duane J. Reinhardt, Gerald K. Wichmann
  • Publication number: 20030185899
    Abstract: A non-corrosive, liquid, aqueous sterilant composition (as a concentrate or ready-to-use solution), which may be provided in two parts which are mixed prior to application, may comprise a peracid (in an equilibrium solution with an underlying carboxylic acid or mixtures of alkyl carboxylic acids and peroxide), inorganic buffering agent, and water. It has been found that the use of this simplified system, even in the absence of additional components which have been thought to be desirable for sterilants used on metal parts (e.g.
    Type: Application
    Filed: March 10, 2003
    Publication date: October 2, 2003
    Applicant: Ecolab Inc.
    Inventors: Francis L. Richter, Duane J. Reinhardt, Sally K. Swart
  • Patent number: 6627657
    Abstract: Compositions having antimicrobial activity against a variety of microorganisms, including vegetative bacteria, bacterial spores, fungi, and fungal spores are particularly useful for microbiocidal treatments of a variety of substances. More specifically, compositions have antibmicrobial activity against microorganisms of the Bacillus cereus group such as Bacillus cereus, Bacillus mycoides, Bacillus anthracis, and Bacillus thuringiensis are particularly useful. Compositions including hydrogen peroxide, a carboxylic acid, and a peroxycarboxylic acid in which the weight ratio of the peroxycarboxylic acid to the hydrogen peroxide is at least 4:1 are effective against microorganisms, particularly bacterial spores. Such compositions include a reduced amount of hydrogen peroxide relative to the amount of peroxycarboxylic acid as compared to conventional compositions. Compositions can also include a quaternary ammonium compound, a stabilizing agent, a surfactant, a hydrotrope, or other additives.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: September 30, 2003
    Assignee: Ecolab Inc.
    Inventors: John D. Hilgren, Francis L. Richter, Duane J. Reinhardt, Joy A. Salverda, Christina L. Rahm
  • Patent number: 6589565
    Abstract: A non-corrosive, liquid, aqueous sterilant composition (as a concentrate or ready-to-use solution), which may be provided in two parts which are mixed prior to application, may comprise a peracid (in an equilibrium solution with an underlying carboxylic acid or mixtures of alkyl carboxylic acids and peroxide), inorganic buffering agent, and water. It has been found that the use of this simplified system, even in the absence of additional components which have been thought to be desirable for sterilants used on metal parts (e.g.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: July 8, 2003
    Assignee: Ecolab Inc.
    Inventors: Francis L. Richter, Duane J. Reinhardt, Sally K. Swart
  • Patent number: 5622708
    Abstract: The invention is an erodible antimicrobial caulk composition having a sanitizer and a hardener which controls the consistency and the dissolution rate of the composition once subjected to an aqueous flow. Also disclosed is a method of preparing the erodible caulk composition. These caulks are useful in institutional food preparation and food serving environments including restaurants, hospitals, day care facilities, nursing homes, and the like as well as institutional food harvesting and processing environments including food and beverage processing plants, dairy farms and dairy plant operations, red meat, poultry and fish preparation and processing environments, and the like, including post process food transport and distribution channel environments such as trucks and grocery or foodstuff retailers.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: April 22, 1997
    Assignee: Ecolab Inc.
    Inventors: Francis L. Richter, Duane J. Reinhardt, Paula J. D. Carlson
  • Patent number: 5436008
    Abstract: This invention is a microbicidal and tuberculocidal composition comprising a major portion of carrier and an effective sanitizing amount of octanoic acid, or octanoic acid derivatives, and a sulfur containing compound. Optionally, the invention may also comprise any variety of formulatory ingredient options or application adjuvants. The invention comprises concentrate compositions and methods of sanitizing and disinfecting using the antimicrobial composition of the invention.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: July 25, 1995
    Assignee: Ecolab Inc.
    Inventors: Francis L. Richter, Duane J. Reinhardt
  • Patent number: 5234719
    Abstract: A food additive microbicidal composition consisting essentially of a major portion of carrier and an effective sanitizing amount of octanoic acid. Optionally, the invention may also consist essentially of any variety of formulatory ingredient options or application adjuvants. The invention comprises concentrate compositions and methods of sanitizing and disinfecting using the antimicrobial composition of the invention.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: August 10, 1993
    Assignee: Ecolab Inc.
    Inventors: Francis L. Richter, Daniel E. Pedersen, Dale L. Fredell, Duane J. Reinhardt