Patents by Inventor Antjo H. Meijerhof

Antjo H. Meijerhof 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).

  • Method for reducing color in used lubricating oil
    Patent number: 9708565
    Abstract: A method for reducing color in used lubricating oil. The method comprises combining: (i) a used lubricating oil; (ii) an alkali metal borohydride; and (iii) a bisulfite or metabisulfite salt.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: July 18, 2017
    Assignee: Vertellus Performance Chemicals, LLC
    Inventor: Antjo H. Meijerhof
  • METHOD FOR REDUCING COLOR IN USED LUBRICATING OIL
    Publication number: 20140357538
    Abstract: A method for reducing color in used lubricating oil. The method comprises combining: (i) a used lubricating oil; (ii) an alkali metal borohydride; and (iii) a bisulfite or metabisulfite salt.
    Type: Application
    Filed: January 21, 2013
    Publication date: December 4, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventor: Antjo H. Meijerhof