Patents by Inventor Guillermo D. Zappi

Guillermo D. Zappi 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).

  • Electrodialysis methods for purification and recovery of gluconic acid derivatives
    Patent number: 6541228
    Abstract: A process for purifying and concentrating a gluconic acid derivative, such as 2-keto-L-gulonic acid, comprising introducing a non-viable and/or acidified fermentation medium or an in-vitro reactor medium comprising at least the gluconic acid derivative and/or salt thereof to electrodialysis thereby purifying and concentrating the gluconic acid derivative.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: April 1, 2003
    Assignee: The Electrosynthesis Company, Inc.
    Inventors: J. David Genders, Ram Gopal, Dan M. Hartsough, Peter M. Kendall, William J. Long, Duane J. Mazur, Guillermo D. Zappi
  • Electrodialysis methods for purification and recovery of gluconic acid derivatives
    Patent number: 6187570
    Abstract: A process for purifying and concentrating a gluconic acid derivative, such as 2-keto-L-gulonic acid, comprising introducing a non-viable and/or acidified fermentation medium or an in-vitro reactor medium comprising at least the gluconic acid derivative and/or salt thereof to electrodialysis thereby purifying and concentrating the gluconic acid derivative.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: February 13, 2001
    Assignee: The Electrosynthesis Company, Inc.
    Inventors: J. David Genders, Ram Gopal, Dan M. Hartsough, Peter M. Kendall, William J. Long, Duane J. Mazur, Guillermo D. Zappi