Patents by Inventor Cline A. Tichner

Cline A. Tichner 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).

  • Thickened water-based hydraulic fluids
    Patent number: 4390440
    Abstract: In accordance with the instant invention, a water-based hydraulic fluid, having improved viscosity can be obtained by blending a carboxylic acid with a thickened hydraulic fluid composition employing a thickener obtained by modifying a conventional polyether polyol thickening agent with an alpha-olefin epoxide or glycidyl ether having about 10 to 24 carbon atoms or mixtures thereof. Small amounts of higher molecular weight glycols may also be incorporated into the chain.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: June 28, 1983
    Assignee: BASF Wyandotte Corporation
    Inventors: Ellen S. Schwartz, Cline A. Tichner