Patents by Inventor Steffen Ruf

Steffen Ruf 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).

  • Nitrooxyesters, their preparation and use
    Patent number: 9162969
    Abstract: The present invention relates to the novel compounds of the formula (I), as well as to their manufacture and use and compositions comprising them. The invention also relates to a change in oxidation reactions of hydrocarbons admixed to these compounds. Furthermore the invention relates to (bio)diesel fuel comprising such compounds.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: October 20, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Max Hugentobler, Steffen Ruf, Bettina Wuestenberg
  • Use of carotenoid (ester)s
    Patent number: 8709110
    Abstract: The present invention relates to a composition comprising a) a substance selected from the group of astaxanthinmonoalkanoylesters, astaxanthindialkanoylesters, isozeaxanthin, isozeaxanthinmonoalkanoylesters, isozeaxanthindialkanoylesters and mixtures thereof; and b) a substance selected from the group of alkyl nitrates, nitrooxy esters of alkoxy substituted aliphatic alcohols and organic peroxides; as well as to a change in oxidation reactions of hydrocarbons, especially fuels, admixed to these compositions. The invention also relates to a composition comprising a) a compound selected from the group consisting of astaxanthinmonoalkanoylesters, astaxanthindialkanoylesters, iso-zeaxanthin, iso-zeaxanthinmonoalkanoylesters, iso-zeaxanthindialkanoylesters and mixtures thereof; and c) a fuel.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: April 29, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Max Hugentobler, Steffen Ruf, Bettina Wuestenberg
  • NITROOXYESTERS, THEIR PREPARATION AND USE
    Publication number: 20120210634
    Abstract: The present invention relates to the novel compounds of the formula (I), as well as to their manufacture and use and compositions comprising them. The invention also relates to a change in oxidation reactions of hydrocarbons admixed to these compounds. Furthermore the invention relates to (bio)diesel fuel comprising such compounds.
    Type: Application
    Filed: September 14, 2010
    Publication date: August 23, 2012
    Inventors: Max Hugentobler, Steffen Ruf, Bettina Wuestenberg
  • NOVEL USE OF CAROTENOID (ESTER)S
    Publication number: 20110119995
    Abstract: The present invention relates to a composition comprising a) a substance selected from the group of astaxanthinmonoalkanoylesters, astaxanthindialkanoylesters, isozeaxanthin, isozeaxanthinmonoalkanoylesters, isozeaxanthindialkanoylesters and mixtures thereof; and b) a substance selected from the group of alkyl nitrates, nitrooxy esters of alkoxy substituted aliphatic alcohols and organic peroxides; as well as to a change in oxidation reactions of hydrocarbons, especially fuels, admixed to these compositions. The invention also relates to a composition comprising a) a compound selected from the group consisting of astaxanthinmonoalkanoylesters, astaxanthindialkanoylesters, iso-zeaxanthin, iso-zeaxanthinmonoalkanoylesters, iso-zeaxanthindialkanoylesters and mixtures thereof; and c) a fuel.
    Type: Application
    Filed: March 11, 2009
    Publication date: May 26, 2011
    Inventors: Max Hugentobler, Steffen Ruf, Bettina Wuestenberg
  • Fuel processing system having a membrane separator
    Patent number: 7537738
    Abstract: A fuel processing system is provided for reforming a hydrocarbon fuel. This fuel processing system utilizes a membrane separator to separate the hydrogen from the reformate stream. A CO-reduction and cleanup system works with the membrane separator to increase the production of hydrogen.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: May 26, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Annette M Brenner, Tai-Chiang Yu, Yan Zhang, Steffen Ruf
  • Fuel processing system having a membrane separator
    Publication number: 20040142220
    Abstract: A fuel processing system is provided for reforming a hydrocarbon fuel. This fuel processing system utilizes a membrane separator to separate the hydrogen from the reformate stream. A CO-reduction and cleanup system works with the membrane separator to increase the production of hydrogen.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 22, 2004
    Inventors: Annette M. Brenner, Tai-Chiang Yu, Yan Zhang, Steffen Ruf
  • Method for separating at least one selected polymer from a mixture of polymers
    Publication number: 20040116563
    Abstract: The present invention provides a method for separating one or more selected polymer(s) from a mixture of polymers, as well as the recycled solid polymer product produced by the present method of the invention. One method of the present invention involves dissolving a mixture of polymers in a solvent to produce a solution, then cooling the solution to a temperature at which at least one of the selected polymers precipitates in the form of a solid. The solid is then separated from the suspension before being washed in a solvent at a temperature that is higher than the dissolving temperature, in order to produce a washed solid. The washed solid is separated from the second solvent. In one variant of the method, the suspension produced in the cooling step is treated with an added solvent.
    Type: Application
    Filed: January 9, 2004
    Publication date: June 17, 2004
    Inventors: Erwin Feick, Brigitte Heller, Thomas Kaiser, Steffen Ruf, Robert Schleich, Bernd Bungert, Andreas Thiele, Guido Gorski