Patents by Inventor Günter Subklew

Günter Subklew 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 in situ soil decontamination and micro-emulsion suitable therefor
    Patent number: 6280533
    Abstract: In a method for in situ cleanup of soil contaminated with a pollutant, a micro-emulsion containing an oil component with triglycerides, or essential oils or fatty acid esters or mixtures thereof, and a surfactant component of one or more branched or multi-chain anionic surfactants is used for pollutant extraction. The extraction of pollutant from the contaminated soil is carried out at a temperature range of 0° C. and 200 ° C. The oil component of the micro-emulsion contains one or more triglycerides or fatty acid esters in amounts ≧5% by weight and less than 50% by weight, one or more dialkyl sulfosuccinic acid compounds as an anionic surfactant, and one or more branched, multi-chain or multi-chain branched non-ionic surfactants. The anionic and non-ionic surfactants are present in the micro-emulsion in an amount of ≦30% by weight.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: August 28, 2001
    Assignee: Dr. Fauz-Hubert Haegel
    Inventors: Karin Hoppe, Frank Dierkes, Franz-Hubert Haegel, Kirsten Mönig, Günter Subklew