Patents by Inventor Paul V. Cox

Paul V. Cox 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).

  • Improvements in the preparation of concentrates for high water based hydraulic fluids
    Patent number: 4526697
    Abstract: A high water based hydraulic fluid having about 95% water and a concentrate comprising a zincdihydrocarbyldithiophosphate, the reaction product of an alkanolamine, preferably triethanolamine, and a phosphate ester acid of the general formula: ##STR1## where R.sup.4 is hydrocarbyl, R.sup.5 is alkyl, each n is independently 1 or 2 and x is between 1 and 20, and optionally a polyalkylene glycol of molecular weight between 1000 and 100000.A method of preparing a concentrate is also disclosed.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: July 2, 1985
    Assignee: Castrol Limited
    Inventor: Paul V. Cox