Patents by Inventor William David Phillips

William David Phillips 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).

  • Fluid treatment process
    Patent number: 6358895
    Abstract: Non-aqueous functional fluids are treated to avoid degradation or to recondition degraded fluids by a process which comprises contacting the fluid with an anionic ion-exchange resin and subsequently removing water by vacuum dehydration. The fluids can be restored and maintained at a water content of less than 0.1% w/w and an acid number of less than 0.2 mgKOH/gm. The fluid is preferably a triaryl phosphate based fluid. Treated fluids may exhibit improved properties especially increased resistivity.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: March 19, 2002
    Assignee: PABU Services, Inc.
    Inventor: William David Phillips
  • Antioxidant composition
    Patent number: 3956289
    Abstract: Antioxidant compositions are prepared by oxidizing a substituted phenothiazine by means of an oxidizing agent.
    Type: Grant
    Filed: July 17, 1974
    Date of Patent: May 11, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Brian McGuigan, Richard John Dellar, William David Phillips