Patents by Inventor Lise Lavigne

Lise Lavigne 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).

  • High swelling ramming paste for aluminum electrolysis cell
    Patent number: 7785497
    Abstract: A new ramming paste for aluminum reduction cell cathodes is a high swelling cold ramming paste made of a blend of pitch, light oil diluent and an aggregate comprising a mixture of anthracite and crushed anode butts or calcined coke. The presence of the crushed anode butts or calcined coke increases the sodium swelling index of the paste by about four times higher than that of regular ramming pastes. This new high swelling cold ramming paste may also contain an amount of a refractory hard material, such as TiB2.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: August 31, 2010
    Assignee: Alcan International Limited
    Inventors: Amir A. Mirchi, Weixia Chen, Lise Lavigne, Emmanuel Bergeron, Jules Bergeron
  • High swelling ramming paste for aluminum electrolysis cell
    Publication number: 20070138445
    Abstract: A new ramming paste for aluminum reduction cell cathodes is a high swelling cold ramming paste made of a blend of pitch, light oil diluent and an aggregate comprising a mixture of anthracite and crushed anode butts or calcined coke. The presence of the crushed anode butts or calcined coke increases the sodium swelling index of the paste by about four times higher than that of regular ramming pastes. This new high swelling cold ramming paste may also contain an amount of a refractory hard material, such as TiB2.
    Type: Application
    Filed: January 29, 2007
    Publication date: June 21, 2007
    Inventors: Amir Mirchi, Weixia Chen, Lise Lavigne, Emmanuel Bergeron, Jules Bergeron
  • High swelling ramming paste for aluminum electrolysis cell
    Patent number: 7186357
    Abstract: A new ramming paste for aluminum reduction cell cathodes is a high swelling cold ramming paste made of a blend of pitch, light oil diluent and an aggregate comprising a mixture of anthracite and crushed anode butts or calcined coke. The presence of the crushed anode butts or calcined coke increases the sodium swelling index of the paste by about four times higher than that of regular ramming pastes. This new high swelling cold ramming paste may also contain an amount of a refractory hard material, such as TiB2.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: March 6, 2007
    Assignee: Alcan International Limited
    Inventors: Amir A. Mirchi, Weixia Chen, Lise Lavigne, Emmanuel Bergeron, Jules Bergeron
  • High swelling ramming paste for aluminum electrolysis cell
    Publication number: 20040178063
    Abstract: A new ramming paste for aluminum reduction cell cathodes is a high swelling cold ramming paste made of a blend of pitch, light oil diluent and an aggregate comprising a mixture of anthracite and crushed anode butts or calcined coke. The presence of the crushed anode butts or calcined coke increases the sodium swelling index of the paste by about four times higher than that of regular ramming pastes. This new high swelling cold ramming paste may also contain an amount of a refractory hard material, such as TiB2.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 16, 2004
    Inventors: Amir A. Mirchi, Weixia Chen, Lise Lavigne, Emmanuel Bergeron, Jules Bergeron