Patents by Inventor Daniel Zweifel

Daniel Zweifel 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).

  • Corrosion inhibiting polyalkylene glycol-based lubricant compositions
    Patent number: 9057038
    Abstract: Lubricant compositions including a random or block copolymer first high-EO content polyalkylene glycol, a random copolymer second polyalkylene glycol based on propylene oxide and butylene oxide or a second polyalkylene homopolymer having propylene oxide or butylenes oxide units and at least one corrosion inhibitor selected from the group of sarcosines, amine phosphates, and calcium dinonylnaphthalenesulfonate/carboxylates are provided. Lubricant compositions for extreme conditions are also provided.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: June 16, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Martin R. Greaves, Daniel Zweifel, Evelyn A. Zaugg-Hoozemans
  • Corrosion Inhibiting Polyalkylene Glycol-Based Lubricant Compositions
    Publication number: 20130157909
    Abstract: Lubricant compositions including a random or block copolymer first high-EO content polyalkylene glycol, a random copolymer second polyalkylene glycol based on propylene oxide and butylene oxide or a second polyalkylene homopolymer having propylene oxide or butylenes oxide units and at least one corrosion inhibitor selected from the group of sarcosines, amine phosphates, and calcium dinonylnaphthalenesulfonate/carboxylates are provided. Lubricant compositions for extreme conditions are also provided.
    Type: Application
    Filed: August 17, 2011
    Publication date: June 20, 2013
    Applicant: Dow Global Technologies LLC
    Inventors: Martin R. Greaves, Daniel Zweifel, Evelyn A. Zaugg-Hoozemans
  • POLYALKYLENE GLYCOL-BASED WIND TURBINE LUBRICANT COMPOSITIONS
    Publication number: 20110039739
    Abstract: A lubricant composition that is especially useful under extreme conditions, such as in wind turbine gearboxes, comprises a mixed feed glycol; a polyol ester; two particular antioxidants; a phosphorus-based extreme pressure additive; a yellow metal passivator; and at least one specified corrosion inhibitor. The composition passes testing according to ASTM D665B even at 168 hours from initiation, and/or the SKF-Emcor Test Method DIN 51802:1990.
    Type: Application
    Filed: April 22, 2009
    Publication date: February 17, 2011
    Inventors: Martin Greaves, Michelle O. Valenzuela, Daniel Zweifel