Patents by Inventor Joseph C. Richards

Joseph C. Richards 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: 8029693
    Abstract: A method for the rapid dilution of an aqueous peracid solution, particularly, peracetic acid, in which a concentrated peracid solution is diluted with an aqueous diluent to produce a more dilute peracid solution in which the solution components are already at equilibrium immediately after dilution. The peracid in a preferred embodiment of this method is peracetic acid, for which the aqueous diluent is acetic acid and water, or hydrogen peroxide and water, or acetic acid, hydrogen peroxide and water, whose relative amounts are selected to produce a diluted aqueous peracid acid solution whose peracetic acid, hydrogen peroxide and acetic acid components are in equilibrium immediately after dilution.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: October 4, 2011
    Assignee: FMC Corporation
    Inventors: Emmanuel A. Dada, Donald S. Lapham, III, Joseph C. Richards
  • Publication number: 20090194735
    Abstract: A method for the rapid dilution of an aqueous peracid solution, particularly, peracetic acid, in which a concentrated peracid solution is diluted with an aqueous diluent to produce a more dilute peracid solution in which the solution components are already at equilibrium immediately after dilution. The peracid in a preferred embodiment of this method is peracetic acid, for which the aqueous diluent is acetic acid and water, or hydrogen peroxide and water, or acetic acid, hydrogen peroxide and water, whose relative amounts are selected to produce a diluted aqueous peracid acid solution whose peracetic acid, hydrogen peroxide and acetic acid components are in equilibrium immediately after dilution.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 6, 2009
    Applicant: FMC Corporation
    Inventors: Emmanuel A. Dada, Donald S. Lapham, III, Joseph C. Richards
  • Patent number: 6828294
    Abstract: An aqueous composition suitable for use as a high-retention sanitizer, especially on irregular and/or non-horizontal surfaces and surfaces on which water does not readily spread, a method for sanitizing a surface using the composition, and kits comprising components of the composition. The composition contains an organic peracid, preferably peracetic acid, or other antimicrobial agent, and a retention aid. The retention aid preferably is provided as a concentrate for admixture with the antimicrobial agent at point of use and comprises a mixture of a non-ionic surfactant, an ionic surfactant, and optionally a water-soluble magnesium ion source; or a mixture of a biopolymer thickening agent and at least one surfactant, and optionally a water-soluble magnesium ion source.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: December 7, 2004
    Assignee: FMC Corporation
    Inventors: Kenneth E. Kellar, Joseph C. Richards, Crystal A. Nesbitt
  • Publication number: 20040171507
    Abstract: An aqueous composition suitable for use as a high-retention sanitizer, especially on irregular and/or non-horizontal surfaces and surfaces on which water does not readily spread, a method for sanitizing a surface using the composition, and kits comprising components of the composition. The composition contains an organic peracid, preferably peracetic acid, or other antimicrobial agent, and a retention aid. The retention aid preferably is provided as a concentrate for admixture with the antimicrobial agent at point of use and comprises a mixture of a non-ionic surfactant, an ionic surfactant, and optionally a water-soluble magnesium ion source; or a mixture of a biopolymer thickening agent and at least one surfactant, and optionally a water-soluble magnesium ion source.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 2, 2004
    Inventors: Kenneth E. Kellar, Joseph C. Richards, Crystal A. Nesbitt
  • Publication number: 20030109405
    Abstract: An aqueous composition suitable for use as a high-retention sanitizer, especially on irregular and/or non-horizontal surfaces and surfaces on which water does not readily spread, a method for sanitizing a surface using the composition, and kits comprising components of the composition. The composition contains an organic peracid, preferably peracetic acid, or other antimicrobial agent, and a retention aid. The retention aid preferably is provided as a concentrate for admixture with the antimicrobial agent at point of use and comprises a mixture of a non-ionic surfactant, an ionic surfactant, and optionally a water-soluble magnesium ion source; or a mixture of a biopolymer thickening agent and at least one surfactant, and optionally a water-soluble magnesium ion source.
    Type: Application
    Filed: August 6, 2002
    Publication date: June 12, 2003
    Inventors: Kenneth E. Kellar, Joseph C. Richards, Crystal A. Nesbitt
  • Patent number: 5597791
    Abstract: The invention provides an aqueous colloidal peroxygen composition comprising stable sols, gels and solids of C2 to C6 peroxycarboxylic acids with a polysaccharide gum, optionally with gum cross-linking agents such as boric acid, borate salts, urea and the like useful for delivering peracids in applications such as surface cleaners, detergent bleach, automatic dish washing formulations and the like. The compositions are particularly useful for sanitizing or bleaching at an acid or neutral pH compared with other chlorine or peroxygen bleach compounds.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: January 28, 1997
    Assignee: FMC Corporation
    Inventors: Joseph C. Richards, William A. Hills, William C. Snow
  • Patent number: 4970019
    Abstract: A manufacturing process and composition is claimed for a composition of matter comprising sodium carbonate, sodium carbonate perhydrate, a fluorescent whitening agent and a diphosphonic acid. The process comprises incorporating the fluorescent whitening agent and diphosphonic acid into aqueous hydrogen peroxide, uniformly applying the hydrogen peroxide solution to particulate sodium carbonate to form a reaction mixture, urging water vapor from the surface of the reaction mixture and maintaining the temperature of the reaction mixture between about 35.degree. C. and 80.degree. C.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: November 13, 1990
    Assignee: FMC Corporation
    Inventors: John Crosby, Joseph C. Richards
  • Patent number: 4747728
    Abstract: The present invention is a method for distributing a colloid-free, aqueous solution containing a peroxygen compound in a particulate matter containing clay without causing the clay to swell. It has been found that hydrogen peroxide alone causes swelling of clays. It is well-known that monovalent ions cause clays to disperse and swell. It is unexpected to find that perborate and persulfate anions do not cause clays to swell, even in the presence of sodium ions. The process is useful for enhancing the biodegradation of contaminants in clayey soils or for winning mineral values from clayey ore deposits.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: May 31, 1988
    Assignee: International Technology Corporation
    Inventors: Robert D. Norris, Richard A. Brown, Joseph C. Richards
  • Patent number: 4594170
    Abstract: The invention provides a method to liquify a heavy brine completion fluid containing chlorides. The combination of a persulfate and hydrogen peroxide was found to be more effective than either compound alone, or than a peroxygen plus an activator.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: June 10, 1986
    Assignee: FMC Corporation
    Inventors: Richard A. Brown, Robert D. Norris, Joseph C. Richards