Patents by Inventor JOERG FAHL

JOERG FAHL 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 lubricating a clutch-only automatic transmission component requiring lubrication
    Patent number: 8546311
    Abstract: The present disclosure provides a fluid for lubricating the clutch-only portion of a wet clutch in a dual clutch transmission. The fluid provides high dynamic friction durability and comprises an oil of lubricating viscosity formulated with additive components comprising: i) at least one metal detergent; ii) at least one phosphorus-based wear preventative; iii) a phosphorylated and boronated dispersant different than the at least one phosphorus-based wear preventative; iv) a sulfurized extreme pressure agent; and a ratio between the content (ppm) of the sulfur based on the total weight of the fluid composition and a content (ppm) of phosphorus based on the total weight of the fluid composition ranging from about 2.0 to about 0.5 (ppm/ppm).
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: October 1, 2013
    Assignees: Volkswagen Aktiengesellsschaft, Audi AG
    Inventors: Joerg Fahl, Holger Gruenleitner, Mario Schenker, Ramnath N. Iyer
  • METHOD FOR LUBRICATING A CLUTCH-ONLY AUTOMATIC TRANSMISSION COMPONENT REQUIRING LUBRICATION
    Publication number: 20090233823
    Abstract: The present disclosure provides a fluid for lubricating the clutch-only portion of a wet clutch in a dual clutch transmission. The fluid provides high dynamic friction durability and comprises an oil of lubricating viscosity formulated with additive components comprising: i) at least one metal detergent; ii) at least one phosphorus-based wear preventative; iii) a phosphorylated and boronated dispersant different than the at least one phosphorus-based wear preventative; iv) a sulfurized extreme pressure agent; and a ratio between the content (ppm) of the sulfur based on the total weight of the fluid composition and a content (ppm) of phosphorus based on the total weight of the fluid composition ranging from about 2.0 to about 0.5 (ppm/ppm).
    Type: Application
    Filed: March 10, 2009
    Publication date: September 17, 2009
    Applicants: VOLKSWAGEN AKTIENGESELLSCHAFT, AUDI AG
    Inventors: JOERG FAHL, HOLGER GRUENLEITNER, MARIO SCHENKER, RAMNATH N. IYER
  • Operating medium for carbon dioxide-cooling systems and air-conditioning systems
    Patent number: 7303693
    Abstract: The invention relates to resource operating medium compositions containing additivated lubricants based on polyalkylene glycols and/or neopentyl polyol esters, which are additivated with alkylated triaryl phosphate esters which are suitable for lubricating refrigerators, air-conditioning systems, heat pumps and similar systems which are operated using carbon dioxide as an operating medium.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: December 4, 2007
    Assignee: Fuchs Petrolub AG
    Inventors: Jörg Fahl, Jürgen Braun
  • Esters of aromatic polycarboxylic acids with 2-alkylalkan-1-ols
    Patent number: 6310234
    Abstract: The invention relates to esters of certain benzene polycarboxylic acids with 2-alkylalcohols, and their use as hydraulic fluid, as or in lubricant formulations or as an additive in cosmetics.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: October 30, 2001
    Assignee: RWE-DEA Aktiengesellschaft fuer Mineraloel und Chemie
    Inventors: Albert Thomas Herrmann, Jörg Fahl