Patents by Inventor Andrew D. Wenzel

Andrew D. Wenzel 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 treating brass
    Patent number: 6830629
    Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution that contains a chelating agent. A brass article can optionally be post-treated by contacting it with an aqueous solution containing anazole.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: December 14, 2004
    Assignee: The Ford Meter Box Company, Inc.
    Inventors: Edward L. Cote, Andrew D. Wenzel, Lance E. Agness
  • Method for treating brass
    Publication number: 20040135140
    Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution that contains a chelating agent. A brass article can optionally be post-treated by contacting it with an aqueous solution containing anazole.
    Type: Application
    Filed: November 18, 2003
    Publication date: July 15, 2004
    Inventors: Edward L. Cote, Andrew D. Wenzel, Lance E. Agness
  • Method for treating brass
    Publication number: 20030111093
    Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution that contains a chelating agent. The brass article can optionally be post-treated by contacting them with an aqueous solution containing hydrogen peroxide.
    Type: Application
    Filed: August 12, 2002
    Publication date: June 19, 2003
    Inventors: Edward L. Cote, Andrew D. Wenzel, Lance E. Agness
  • Method for treating brass
    Publication number: 20030098041
    Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution that contains a chelating agent. A brass article can optionally be post-treated by contacting it with an aqueous solution containing hydrogen peroxide.
    Type: Application
    Filed: September 10, 2002
    Publication date: May 29, 2003
    Inventors: Edward L. Cote, Andrew D. Wenzel, Lance E. Agness
  • Method for treating brass
    Patent number: 6447616
    Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution having a pH of about 10 to about 14 that contains a chelating agent. During contact, the brass articles can be sonicated. The brass articles can be optionally pretreated by contacting them with an aqueous solution containing an organic carboxylic acid and an inorganic per-salt. The brass article can optionally further be post treated by contacting them with an aqueous solution containing thiourea.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: September 10, 2002
    Assignee: The Ford Meter Box Company
    Inventors: Edward L. Cote, Andrew D. Wenzel
  • Method for treating brass
    Patent number: 6432210
    Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution having a pH of about 10 to about 14 that contains a chelating agent. During contact, the brass articles can be sonicated. The brass articles can be optionally pretreated by contacting them with an aqueous solution containing an organic carboxylic acid and an inorganic per-salt. The brass article can optionally further be post treated by contacting them with an aqueous solution containing sodium persulfate.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 13, 2002
    Assignee: The Ford Meter Box Company, Inc.
    Inventors: Edward L. Cote, Andrew D. Wenzel, Lance E. Agness
  • Method for treating brass
    Publication number: 20020043271
    Abstract: Brass articles having leachable lead are contacted with an aqueous caustic solution having a pH of about 10 to about 14 that contains a chelating agent. During contact, the brass articles can be sonicated. The brass articles can be optionally pretreated by contacting them with an aqueous solution containing an organic carboxylic acid and an inorganic per-salt. The brass article can optionally further be post treated by contacting them with an aqueous solution containing sodium persulfate.
    Type: Application
    Filed: February 28, 2001
    Publication date: April 18, 2002
    Inventors: Edward L. Cote, Andrew D. Wenzel, Lance E. Agness