Patents by Inventor James R. Ohlsen

James R. Ohlsen 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).

  • Corrosion inhibitor composition and method of use
    Patent number: 5512212
    Abstract: A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxylated fatty diamine, and (B) an aqueous solution of a molybdate compound or salt thereof.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, James R. Ohlsen, Richard D. McBride
  • Corrosion inhibitor composition and method of use
    Patent number: 5459125
    Abstract: A composition and method for inhibiting corrosion by chlorine dioxide in oil field water flood systems are disclosed. The composition is comprised of an alcohol, an acid, a fatty imidazoline, an ethoxylated fatty diamine, and water. This composition has proven more effective than chromates at inhibiting the corrosion caused by chlorine dioxide, further without the serious toxicological effects caused by the use of chromates.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: October 17, 1995
    Assignee: BJ Services Company
    Inventors: James R. Ohlsen, J. Michael Brown, Gene F. Brock, Veena K. Mandlay
  • Corrosion inhibitor composition and method of use
    Patent number: 5415805
    Abstract: A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxylated fatty diamine, and (B) an aqueous solution of a molybdate compound or salt thereof.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, James R. Ohlsen, Richard D. McBride