Patents by Inventor Dale L. Fredell

Dale L. Fredell 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: 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: 5419908
    Abstract: The invention generally comprises a composition capable of sanitizing and disinfecting antimicrobial efficacy while also being ingestible as a food additive residue by humans and mammals. Specifically, the microbicidal composition of the invention generally comprises a carrier and an antimicrobial agent, wherein the antimicrobial agent generally comprises a C.sub.5 to C.sub.14 unsaturated monocarboxylic acid such as sorbic acid, in combination with an aromatic carboxylic acid such as benzoic acid. The antimicrobial composition of the invention is useful for both hard and soft surface sanitizing in environments such as farms, milk and food processing, fluid milk operations, institutional food preparation and serving areas, health care and child care facilities, as well as any other number of contact sensitive environments which require compositions having high antimicrobial efficacy and which will not contaminate food stocks and which pose no danger to humans.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: May 30, 1995
    Assignee: Ecolab Inc.
    Inventors: Francis L. Richter, Daniel E. Pedersen, May J. Biedscheid, Dale L. Fredell
  • Patent number: 5336500
    Abstract: The invention generally comprises a composition capable of sanitizing and disinfecting antimicrobial efficacy while also being ingestible as a food additive residue by humans and mammals. Specifically, the microbicidal composition of the invention generally comprises a carrier and an antimicrobial agent, wherein the antimicrobial agent generally comprises a C.sub.5 to C.sub.4 unsaturated monocarboxylic acid such as sorbic acid, in combination with an aromatic carboxylic acid such as benzoic acid. The antimicrobial composition of the invention is useful for both hard and soft surface sanitizing in environments such as farms, milk and food processing, fluid milk operations, institutional food preparation and serving areas, health care and child care facilities, as well as any other number of contact sensitive environments which require compositions having high antimicrobial efficacy and which will not contaminate food stocks and which pose no danger to humans.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: August 9, 1994
    Assignee: Ecolab Inc.
    Inventors: Francis L. Richter, Daniel E. Pedersen, May J. Biedscheid, Dale L. Fredell
  • 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
  • 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