Patents by Inventor Christine Schnepf

Christine Schnepf 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 washing clothes, in particular working clothes
    Patent number: 6398820
    Abstract: A process for washing laundry is provided in which a washing alkali component and a surfactant component are combined with water to form a wash liquor, the wash liquor is combined with laundry in a standard washing machine for institutional laundries, and the wastewater from the wash is treated by membrane filtration, where the throughflow rate is reduced by less than 10 percent over an operating time of 120 hours. The washing alkali component is composed of an anionic surfactant and a water-soluble silicate; an alkali metal hydroxide and a complexing agent; or an anionic surfactant and water-soluble silicate and an alkali metal hydroxide, a complexing agent, or a mixture of an alkali metal hydroxide and a complexing agent.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: June 4, 2002
    Assignee: Henkel-Ecolab GmbH & Co. OHG
    Inventors: Thomas Merz, Christine Schnepf, Khalil Shamayeli
  • Method for washing clothes
    Patent number: 6287347
    Abstract: A method of washing textiles in an institutional washing machine wherein soil-containing wastewater is regenerated through a nanofiltration membrane and recycled to the washing process.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: September 11, 2001
    Assignee: Henkel Ecolab GmbH & Co OHG
    Inventors: Ralf Krack, Alfred Laufenberg, Joerg Brockhaus, Christine Schnepf, Thomas Merz, Dietmar Rossner