Patents by Inventor Douglas A. Dent

Douglas A. Dent 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).

  • Publication number: 20070262018
    Abstract: A method for improving biological reaction within contained water including the use of liners. The inventive concept is designed for treating a body of water having impurities therein. The product consists of a biological formulation on surface media designed to release microorganisms to the containment system to assure a rapid removal of waste material. The liner material microorganisms are attached via microbial charge to the liner surface to the colonized liner material that is used in any liquid or moist waste holding or containment systems.
    Type: Application
    Filed: May 9, 2006
    Publication date: November 15, 2007
    Inventors: Michael Richter, Douglas Dent
  • Publication number: 20070170114
    Abstract: A method and product for improving the biological attachment and bio-film formation on filter media for use in treating an aquarium, pond and body of water having impurities therein. The product consists of a biological formulation in gel form designed for a slow release of microorganisms to the receiving media. The product is in a liquid gel form to colonize filter media which are contained within a biological filter.
    Type: Application
    Filed: February 12, 2007
    Publication date: July 26, 2007
    Inventors: Michael Richter, Douglas Dent
  • Publication number: 20070075018
    Abstract: A product and a method for treating a body of water having organic and ammonia impurities therein. The product consists of a filter media having been pre-colonized with microorganisms capable of organic oxidation (organic removal) and a media having been pre-colonized with nitrifying bacteria, the product is contained in a bag. The thus pre-colonized media in a bag is placed in a body of water having a water flow therein.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: Michael Richter, Douglas Dent, Mark Krupka
  • Patent number: 5863882
    Abstract: The formulations of the invention comprise a suspension of a sanitizing composition, bacterial spores, surfactants, a thickening agent, and abrasive particles all contained in aqueous solution. These formulations can be used for cleaning and sanitizing bathroom fixtures, sinks, toilet bowls, and other dirty and contaminated surfaces, and have the advantages of being a good surface cleaning agent and a good sanitizer along with providing the long term effect of beneficial bacteria that control pathogens and degrade wastes both on the surface and in the sewage system associated with the surface being treated.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: January 26, 1999
    Assignee: Sybron Chemical Holdings, Inc.
    Inventors: Jian-Er Lin, Douglas A. Dent
  • Patent number: 5449619
    Abstract: A liquid drain opener formulation which comprises a stable suspension of viable microorganisms, a surfactant, and a preservative all contained in an aqueous medium and having a pH in the range of about 3 to 10.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: September 12, 1995
    Assignee: Sybron Chemical Holdings, Inc.
    Inventors: William M. Griffin, Rhonda T. Ritter, Douglas A. Dent