Patents by Inventor Robert P. Richmond

Robert P. Richmond 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).

  • Process for upgrading a contaminated absorbent oil
    Patent number: 4568452
    Abstract: An absorbent hydrocarbonaceous oil comprising contaminants, such as sulfur and/or nitrogen, is upgraded by subjecting the contaminated absorbent oil to hydrorefining. The upgraded absorbent may be utilized again as absorbent.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: February 4, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventor: Robert P. Richmond