Patents by Inventor Edmund Luke Niedzielski

Edmund Luke Niedzielski 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).

  • Hydraulic brake fluid composition
    Patent number: 3970574
    Abstract: A random equilibrium mixture of triethylene glycol diesters of acetic and propionic acids, wherein the molar ratio of acetyl to propionyl groups in the mixed ester composition is from about 40:60 to 50:50, is useful as a hydraulic brake fluid. The composition shows no increase in low temperature (-40.degree.C.) viscosity in the presence of up to 6% by weight of water.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: July 20, 1976
    Assignee: E. I. Du Pont De Nemours & Co.
    Inventor: Edmund Luke Niedzielski