Patents by Inventor Mark A. Christman, II

Mark A. Christman, II 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).

  • Methods for removing amine contaminants from equipment used in the production of polyether polyols
    Patent number: 11529657
    Abstract: Methods of removing amine contaminants from equipment used in the production of polyether polyols. These methods include: (a) contacting the equipment with an aqueous solution of a first acid; (b) discharging the aqueous solution of the first acid from the equipment; (c) contacting the equipment with an aqueous solution of an acidic metal conditioner; (d) discharging the aqueous solution of the acidic metal conditioner from the equipment; (e) contacting the equipment with an aqueous solution of an alkali metal hydroxide; and (f) discharging the aqueous solution of the alkali metal hydroxide from the equipment.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: December 20, 2022
    Assignee: Covestro LLC
    Inventors: Jenna L. Caputo, Mark A. Christman, II, Charles D. Starkey, Daniel R. Wagner, Nigel Barksby
  • METHODS FOR REMOVING AMINE CONTAMINANTS FROM EQUIPMENT USED IN THE PRODUCTION OF POLYETHER POLYOLS
    Publication number: 20220288652
    Abstract: Methods of removing amine contaminants from equipment used in the production of polyether polyols. These methods include: (a) contacting the equipment with an aqueous solution of a first acid; (b) discharging the aqueous solution of the first acid from the equipment; (c) contacting the equipment with an aqueous solution of an acidic metal conditioner; (d) discharging the aqueous solution of the acidic metal conditioner from the equipment; (e) contacting the equipment with an aqueous solution of an alkali metal hydroxide; and (f) discharging the aqueous solution of the alkali metal hydroxide from the equipment.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 15, 2022
    Inventors: Jenna L. Caputo, Mark A. Christman, II, Charles D. Starkey, Daniel R. Wagner, Nigel Barksby
  • Processes for removing water from a polyether polyol
    Patent number: 10150837
    Abstract: Disclosed are processes and systems for removing water from a polyether polyol that employs a controlled temperature and pressure profile.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: December 11, 2018
    Assignee: COVESTRO LLC
    Inventors: Jenna L. Caputo, Matthew S. Otto, Mark A. Christman, II, Daniel R. Wagner
  • PROCESSES FOR REMOVING WATER FROM A POLYETHER POLYOL
    Publication number: 20170369647
    Abstract: Disclosed are processes and systems for removing water from a polyether polyol that employs a controlled temperature and pressure profile.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 28, 2017
    Inventors: Jenna L. Caputo, Matthew S. Otto, Mark A. Christman, II, Daniel R. Wagner