Patents by Inventor Marianne de Keyser

Marianne de Keyser 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).

  • Publication number: 20120010113
    Abstract: A metalworking fluid composition comprising an isomerized base oil having consecutive numbers of carbon atoms and less than 10 wt % naphthenic carbon by n-d-M is provided. The metalworking fluid has reduced mist formation, low foaming tendency and excellent air release properties, and excellent wear properties.
    Type: Application
    Filed: May 20, 2011
    Publication date: January 12, 2012
    Applicant: Chevron U.S.A. Inc.
    Inventors: Allan George Hee, John M. Rosenbaum, Alexander C. Munoz, Katrina Pass, Emerson Castro, Theirry R. Scholier, Marianne de Keyser
  • Publication number: 20090181871
    Abstract: A compressor lubricant composition providing energy savings and exhibiting excellent oxidation stability is provided. The composition comprises (i) 80 to 99.999 weight percent of an isomerized base oil; and (ii) 0.001-20 weight percent of at least an additive selected from an additive package, oxidation inhibitors, pour point depressants, metal deactivators, metal passivators, anti-foaming agents, friction modifiers, anti-wear agents, and mixtures thereof; wherein the isomerized base oil has consecutive numbers of carbon atoms, less than 0.05 wt. % aromatics, a ratio of molecules with monocycloparaffinic functionality to molecules with multicyloparaffinic functionality greater than 2. In one embodiment, compressors employing the lubricant composition with isomerized base oil consumes at least 1% less power than compressors employing the lubricant compositions of the prior art.
    Type: Application
    Filed: June 4, 2008
    Publication date: July 16, 2009
    Inventors: Ravindra Shah, John M. Rosenbaum, Thierry Scholier, Marianne de Keyser, Nancy J. Bertrand
  • Publication number: 20090036333
    Abstract: A metalworking fluid composition comprising an isomerized base oil having consecutive numbers of carbon atoms and less than 10 wt % naphthenic carbon by n-d-M is provided. The metalworking fluid has reduced mist formation, low foaming tendency and excellent air release properties.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Applicant: Chevron U.S.A. Inc.
    Inventors: Thierry R. Scholier, Marianne de Keyser