Patents by Inventor Sydia B. Anderson

Sydia B. Anderson 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 of inhibiting corrosion using isomers of chloro-methylbenzotriazole
    Patent number: 5968408
    Abstract: The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Specific isomers of chloro-methylbenzotriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: October 19, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Sydia B. Anderson, Longchun Cheng, Michael A. Cady
  • Corrosion inhibitor for alkanolamine units
    Patent number: 5911916
    Abstract: The corrosion of metals in contact with aqueous alkanolamine solution in acid gas removal units is inhibited by maintaining in the alkanolamine solution a corrosion inhibiting amount of a thiodialkanol. The thiodialkanol is useful for inhibiting the corrosion of metals in both the acid gas rich and lean portions of the acid gas removal unit.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: June 15, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Ljiljana V. Minevski, Sydia B. Anderson, Michael A. Cady
  • Methods of inhibiting corrosion using halo-benzotriazoles
    Patent number: 5863463
    Abstract: The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Halo-benzotriazoles such as chloro-tolyltriazole and bromo-tolyltriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: January 26, 1999
    Assignee: BetzDearborn Inc.
    Inventors: David W. Reichgott, Sydia B. Anderson, Michael A. Cady, Roger C. May, Anita G. Monino
  • Methods of inhibiting corrosion using halo-benzotriazoles
    Patent number: 5863464
    Abstract: The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Halo-benzotriazoles such as chloro-tolyltriazole and bromo-tolyltriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: January 26, 1999
    Assignee: BetzDearborn Inc.
    Inventors: David W. Reichgott, Sydia B. Anderson, Michael A. Cady, Roger C. May, Anita G. Monino
  • Corrosion inhibitor for alkanolamine units
    Patent number: 5843373
    Abstract: The corrosion of metals in contact with aqueous alkanolamine solution in acid gas removal units is inhibited by maintaining in the alkanolamine solution a corrosion inhibiting amount of a thiodialkanol. The thiodialkanol is useful for inhibiting the corrosion of metals in both the acid gas rich and lean portions of the acid gas removal unit.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: December 1, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Ljiljana V. Minevski, Sydia B. Anderson, Michael A. Cady
  • Methods of inhibiting corrosion using halo-benzotriazoles
    Patent number: 5773627
    Abstract: A method of preparing halo-benzotriazoles is disclosed. The method involves mixing an aqueous solution of sodium hypohalite with an aqueous slurry or suspension of a benzotriazole. Preferred sodium hypohalites are sodium hypochlorite or sodium hypobromite and the preferred benzotriazole is tolyltriazole.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: June 30, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Sydia B. Anderson, Michael A. Cady
  • Methods of inhibiting corrosion using halo-benzotriazoles
    Patent number: 5772919
    Abstract: The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Halo-benzotriazoles such as chloro-tolyltriazole and bromo-tolyltriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: June 30, 1998
    Assignee: BetzDearborn Inc.
    Inventors: David W. Reichgott, Sydia B. Anderson, Michael A. Cady, Roger C. May, Anita G. Monino
  • Method of scavenging oxygen from an aqueous medium
    Patent number: 5466381
    Abstract: An improved oxygen scavenger for aqueous mediums is disclosed which is a disubstituted, water soluble azo compound.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: November 14, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Alan E. Goliaszewski, Michael A. Cady, Paul R. Burgmayer, Sydia B. Anderson, William S. Carey, Roger D. Moulton