Patents by Inventor Max L. Stevens

Max L. Stevens 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).

  • AQUEOUS METHODS FOR TITANATING A CHROMIUM/SILICA CATALYST WITH AN ALKALI METAL
    Publication number: 20240084052
    Abstract: Methods for making titanated silica supports, titanated chromium/silica pre-catalysts, and activated titanated chromium/silica catalysts are disclosed in which hydrogen peroxide and an alkali metal precursor are used during catalyst preparation. Resulting titanated chromium/silica pre-catalysts often contain silica, 0.1 to 5 wt. % chromium, 0.1 to 10 wt. % titanium, and less than or equal to 4 wt. % carbon, and further contain a bound alkali metal or zinc at a molar ratio of alkali metal:titanium or zinc:titanium from 0.02:1 to 3:1 and/or at an amount in a range from 0.01 to 2 mmol of alkali metal or zinc per gram of the silica. High melt index potential activated titanated chromium/silica catalysts can be used to polymerize olefins to produce, for example, ethylene based homopolymers and copolymers having HLMI values of greater than 30 g/10 min.
    Type: Application
    Filed: October 24, 2023
    Publication date: March 14, 2024
    Inventors: Anand Ramanathan, Max P. McDaniel, Jared Barr, Andrew T. Blagg, Christopher E. Wittner, Alan L. Solenberger, Zachary T. Kilpatrick, Micheal P. Stevens
  • Postal center unit
    Patent number: D279419
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: June 25, 1985
    Assignee: 24 Hour Postal Center, Inc.
    Inventors: Max L. Stevens, William P. Goeckeler
  • Postal center unit
    Patent number: D279619
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: July 9, 1985
    Assignee: 24 Hour Postal Center, Inc.
    Inventors: Max L. Stevens, William P. Goeckeler