Patents by Inventor Ellen Lenz

Ellen Lenz 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).

  • Upgrading drip oil
    Publication number: 20070249886
    Abstract: A method is disclosed for upgrading drip oil comprising subjecting the drip oil to multiple distillation steps to form a stream rich in aromatics and a separate stream rich in dicyclopentadiene.
    Type: Application
    Filed: April 20, 2006
    Publication date: October 25, 2007
    Inventors: Krishnan Viswanathan, Lau Yang, Ellen Lenz, David Leyshon
  • Drycleaning method using dipropylene glycol dimethyl ether
    Publication number: 20060042021
    Abstract: A drycleaning method is disclosed. In the method, a composition that comprises at least about 85 wt. % dipropylene glycol dimethyl ether (DMM) is used. The limited solubility of water in DMM is ideal for drycleaning. The method provides good stain removal and fast drying while avoiding excessive fabric shrinkage or soil redeposition.
    Type: Application
    Filed: August 25, 2004
    Publication date: March 2, 2006
    Inventors: Paul Galick, David Kinney, Ellen Lenz, Larry Arndt
  • Drycleaning method using dipropylene glycol n-propyl ether
    Publication number: 20050044636
    Abstract: A drycleaning method is disclosed. In the method, a composition that comprises dipropylene glycol n-propyl ether (DPnP) and is essentially free of siloxanes or polysulfonic acids is used. The composition contains at least about 80 wt. % DPnP and up to about 15 wt. % of water. The method enables superior stain removal while avoiding excessive fabric shrinkage or soil redeposition.
    Type: Application
    Filed: September 2, 2003
    Publication date: March 3, 2005
    Inventors: Paul Galick, Larry Arndt, Shao-Hua Guo, Ellen Lenz, David Kinney