Patents by Inventor Dale Albert Grinstead

Dale Albert Grinstead 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).

  • Method for cleaning floor drains
    Patent number: 7246628
    Abstract: A method for controlling Listeria in floor drains wherein an aqueous solution composed of a chlorinated caustic material which is soft metal compatible is introduced into a drain where Listeria is present. In a preferred manner, the aqueous solution is introduced into the drain employing a hose end dispensing device having a foam producing nozzle. The resulting aqueous solution has a sufficient viscosity to remain in the drain for about 30 seconds to 10 minutes.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: July 24, 2007
    Assignee: JohnsonDiversey, Inc.
    Inventors: Dale Albert Grinstead, James H. Wilson, Jr., Thomas H. Beinkemper
  • Food washing composition
    Publication number: 20030099745
    Abstract: A composition for washing foods is described. The composition has an organic acid, inorganic acid, and surfactant, and the composition is substantially free of alcohol. Also, the composition is non-flammable, generally regarded as safe, and an anti-microbial agent.
    Type: Application
    Filed: November 28, 2001
    Publication date: May 29, 2003
    Applicant: Diversey Lever, Inc.
    Inventors: Dale Albert Grinstead, Petrus Adrianus Angevaare
  • Ultramild antibacterial cleaning composition for frequent use
    Patent number: 6045817
    Abstract: An antibacterial cleaning composition is described which has about 0.05 to about 1 wt. % of a cationic polymer having a charge density of 0.0025 or higher, about 0.2 to about 5% of a zwitterionic surfactant, about 0.2 to about 5 wt. % of at least one biguanide compound, and optionally a nonionic surfactant and a polymeric biocide compound. The composition has a pH of 7.5 or greater.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: April 4, 2000
    Assignee: Diversey Lever, Inc.
    Inventors: Kavssery Parameswaran Ananthapadmanabhan, Kam Kuen Chan, Dale Albert Grinstead, Carol Kregler Vincent, Arnoud Ubald Maria Gengler