Patents by Inventor Ronald Wayne Dever

Ronald Wayne Dever 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).

  • Mineral insulating oil, a process for preparing a mineral insulating oil, and a process for using a mineral insulating oil
    Patent number: 7682499
    Abstract: The invention provides for a mineral insulating oil having a naphthenic base oil and a paraffinic base oil wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a mineral insulating oil having a naphthenic base oil, a paraffinic base oil, and an antioxidant agent wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a process for producing a mineral insulating oil including contacting a naphthenic base oil and a paraffinic base oil wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1. The invention also provides for a process for producing a mineral insulating oil including contacting a naphthenic base oil, a paraffinic base oil, and an antioxidant agent wherein the naphthenic base oil includes a ratio of total sulfur to basic nitrogen of less than about 80:1.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: March 23, 2010
    Assignee: Shell Oil Company
    Inventors: Steven Allen Holmes, Ronald Wayne Dever