Patents by Inventor Vladislav Synek

Vladislav Synek 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).

  • Patent number: 5830833
    Abstract: Lubricants for refrigeration equipment operating with fluorocarbons as refrigerants are produced by esterification of at least one neopolyol type polyhydric alcohol with an acid component comprising 60 to 80 mol percent n-pentanoic acid, from about 40 to about 10 mol percent of at least one straight chain C.sub.6 to C.sub.10 monocarboxylic acid and from about 0 to about 30 mol percent C.sub.6 to C.sub.10 branched chain monocarboxylic acid. The resulting esters are suitable for use without lubricating oil additives.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: November 3, 1998
    Assignee: RWE-DEA Aktiengesellschaft fur Mineraloel und Chemie and Texaco Deutschland GmbH
    Inventors: Hans Dieter Grasshoff, Vladislav Synek, Harald Kohnz
  • Patent number: 5049292
    Abstract: A lubricant for refrigerators which contains phosphate, phosphite and/or silicone additives which impart stability and thermal stability to the lubricant.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: September 17, 1991
    Assignee: Texaco Technologie Europa GmbH
    Inventors: Hans D. Grasshoff, Vladislav Synek